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Journal articles on the topic 'Hyperbolic Geometry'

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1

Reynolds, William F. "Hyperbolic Geometry on a Hyperboloid." American Mathematical Monthly 100, no. 5 (May 1993): 442. http://dx.doi.org/10.2307/2324297.

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2

Reynolds, William F. "Hyperbolic Geometry on a Hyperboloid." American Mathematical Monthly 100, no. 5 (May 1993): 442–55. http://dx.doi.org/10.1080/00029890.1993.11990430.

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3

Kostin, A. V., and I. Kh Sabitov. "Smarandache Theorem in Hyperbolic Geometry." Zurnal matematiceskoj fiziki, analiza, geometrii 10, no. 2 (June 25, 2014): 221–32. http://dx.doi.org/10.15407/mag10.02.221.

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4

Li, Hongbo. "Hyperbolic geometry with geometric algebra." Chinese Science Bulletin 42, no. 3 (February 1997): 262–63. http://dx.doi.org/10.1007/bf02882454.

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5

Lord, Nick, and B. Iversen. "Hyperbolic Geometry." Mathematical Gazette 79, no. 486 (November 1995): 622. http://dx.doi.org/10.2307/3618121.

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6

Baseilhac, Stephane, and Riccardo Benedetti. "Quantum hyperbolic geometry." Algebraic & Geometric Topology 7, no. 2 (June 20, 2007): 845–917. http://dx.doi.org/10.2140/agt.2007.7.845.

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7

Ungar, Abraham A. "Ptolemy’s Theorem in the Relativistic Model of Analytic Hyperbolic Geometry." Symmetry 15, no. 3 (March 4, 2023): 649. http://dx.doi.org/10.3390/sym15030649.

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Ptolemy’s Theorem in Euclidean geometry, named after the Greek astronomer and mathematician Ptolemy, is well-known. By means of the relativistic model of hyperbolic geometry, we translate Ptolemy’s Theorem from Euclidean geometry into the hyperbolic geometry of Lobachevsky and Bolyai. The relativistic model of hyperbolic geometry is based on the Einstein addition of relativistically admissible velocities and, as such, it coincides with the well-known Beltrami–Klein ball model of hyperbolic geometry. The translation of Ptolemy’s Theorem from Euclidean geometry into hyperbolic geometry is achieved by means of hyperbolic trigonometry, called gyrotrigonometry, to which the relativistic model of analytic hyperbolic geometry gives rise.
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8

Eppstein, David, and Michael T. Goodrich. "Succinct Greedy Geometric Routing Using Hyperbolic Geometry." IEEE Transactions on Computers 60, no. 11 (November 2011): 1571–80. http://dx.doi.org/10.1109/tc.2010.257.

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9

Eskew, Russell Clark. "Suspending the Principle of Relativity." Applied Physics Research 8, no. 2 (March 29, 2016): 82. http://dx.doi.org/10.5539/apr.v8n2p82.

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A unique hyperbolic geometry paradigm requires suspending the Relativistic principle that absolute velocity is unmeasurable. The idea that of two observers each sees the same constant velocity, therefore there is no absolute velocity, is true only because Relativity uses a particular Lorentz geometry. Our mathematical geometry constructs circle and hyperbola vectors with hyperbolic terms in an original formulation of complex numbers. We use a point on a hyperbola as a frame of reference. A theory of time is given. The physical laws of motion by Galileo, Newton and Einstein are forged using the absolute velocity and the precondition to electromagnetic velocity. The field of real and fictitious force accelerations is established. We utilize Galilean Invariance to measure absolute velocity. An experiment exemplifies the math from the Earth’s frame of reference. But Relativity is based on local Lorentz geometry. We discover a possible dark energy and gravitational accelerations and a geometry of gravitational collapse.
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10

Lohkamp, Joachim. "Hyperbolic Unfoldings of Minimal Hypersurfaces." Analysis and Geometry in Metric Spaces 6, no. 1 (August 1, 2018): 96–128. http://dx.doi.org/10.1515/agms-2018-0006.

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Abstract We study the intrinsic geometry of area minimizing hypersurfaces from a new point of view by relating this subject to quasiconformal geometry. Namely, for any such hypersurface H we define and construct a so-called S-structure. This new and natural concept reveals some unexpected geometric and analytic properties of H and its singularity set Ʃ. Moreover, it can be used to prove the existence of hyperbolic unfoldings of H\Ʃ. These are canonical conformal deformations of H\Ʃ into complete Gromov hyperbolic spaces of bounded geometry with Gromov boundary homeomorphic to Ʃ. These new concepts and results naturally extend to the larger class of almost minimizers.
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11

Eskew, Russell Clark. "Altering the Principle of Relativity." Applied Physics Research 10, no. 3 (May 31, 2018): 21. http://dx.doi.org/10.5539/apr.v10n3p23.

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A unique hyperbolic geometry paradigm requires altering the Relativistic principle that absolute velocity is unmeasurable. There is no absolute velocity, but in the case where a constant velocity is made from a half-angle velocity, a variable velocity is the same as (absolute) acceleration. Relativity is based on local Lorentz geometry. Our mathematical geometry constructs circle and hyperbola vectors with hyperbolic terms in an original formulation of complex numbers. We use a point on a hyperbola as a frame of reference. A theory is given that time and our velocity are inversely related. The physical laws of motion by Galileo, Newton and Einstein are forged using the half-angle velocity to electromagnetic velocity. The field of kinetic, potential and gravitational force accelerations is established. An experiment exemplifies the math from the Earth’s frame of reference. We discover a possible dark energy and gravitational accelerations and a geometry of gravitational collapse.
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12

Zeitler, H. "Packings in hyperbolic geometry." Teaching Mathematics and Computer Science 2, no. 2 (November 9, 2015): 209–29. http://dx.doi.org/10.5485/tmcs.2004.0040.

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13

Crilly, Tony, John Stillwell, and Michael Henle. "Sources of Hyperbolic Geometry." Mathematical Gazette 83, no. 497 (July 1999): 357. http://dx.doi.org/10.2307/3619103.

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14

Guillopé, Laurent. "Hyperfunctions in hyperbolic geometry." Complex Variables and Elliptic Equations 59, no. 11 (July 10, 2013): 1559–71. http://dx.doi.org/10.1080/17476933.2013.805412.

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15

Ratcliffe, John G., Arlan Ramsay, and Robert D. Richtmyer. "Introduction to Hyperbolic Geometry." American Mathematical Monthly 103, no. 2 (February 1996): 185. http://dx.doi.org/10.2307/2975123.

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16

Gehring, F. W., and K. Hag. "Hyperbolic geometry and disks." Journal of Computational and Applied Mathematics 105, no. 1-2 (May 1999): 275–84. http://dx.doi.org/10.1016/s0377-0427(99)00016-3.

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17

Nash, C. "Geometry of hyperbolic monopoles." Journal of Mathematical Physics 27, no. 8 (August 1986): 2160–64. http://dx.doi.org/10.1063/1.526985.

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18

Horváth, Ákos G. "Hyperbolic plane geometry revisited." Journal of Geometry 106, no. 2 (November 22, 2014): 341–62. http://dx.doi.org/10.1007/s00022-014-0252-0.

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19

Kemper, Matthias, and Joachim Lohkamp. "Potential Theory on Gromov Hyperbolic Spaces." Analysis and Geometry in Metric Spaces 10, no. 1 (January 1, 2022): 394–431. http://dx.doi.org/10.1515/agms-2022-0147.

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Abstract Gromov hyperbolic spaces have become an essential concept in geometry, topology and group theory. Herewe extend Ancona’s potential theory on Gromov hyperbolic manifolds and graphs of bounded geometry to a large class of Schrödinger operators on Gromov hyperbolic metric measure spaces, unifying these settings in a common framework ready for applications to singular spaces such as RCD spaces or minimal hypersurfaces. Results include boundary Harnack inequalities and a complete classification of positive harmonic functions in terms of the Martin boundary which is identified with the geometric Gromov boundary.
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20

Bao, Hui, and Xingdi Chen. "A New Hyperbolic Area Formula of a Hyperbolic Triangle and Its Applications." Journal of Mathematics 2014 (2014): 1–8. http://dx.doi.org/10.1155/2014/838497.

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We study some characterizations of hyperbolic geometry in the Poincaré disk. We first obtain the hyperbolic area and length formula of Euclidean disk and a circle represented by its Euclidean center and radius. Replacing interior angles with vertices coordinates, we also obtain a new hyperbolic area formula of a hyperbolic triangle. As its application, we give the hyperbolic area of a Lambert quadrilateral and some geometric characterizations of Lambert quadrilaterals and Saccheri quadrilaterals.
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21

Knieper, Gerhard, Leonid Polterovich, and Leonid Potyagailo. "Geometric Group Theory, Hyperbolic Dynamics and Symplectic Geometry." Oberwolfach Reports 9, no. 3 (2012): 2139–203. http://dx.doi.org/10.4171/owr/2012/35.

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22

Gallego, Eduardo, and Gil Solanes. "Integral geometry and geometric inequalities in hyperbolic space." Differential Geometry and its Applications 22, no. 3 (May 2005): 315–25. http://dx.doi.org/10.1016/j.difgeo.2005.01.006.

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23

Ungar, Abraham A. "The Hyperbolic Ptolemy’s Theorem in the Poincaré Ball Model of Analytic Hyperbolic Geometry." Symmetry 15, no. 8 (July 27, 2023): 1487. http://dx.doi.org/10.3390/sym15081487.

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Ptolemy’s theorem in Euclidean geometry, named after the Greek astronomer and mathematician Claudius Ptolemy, is well known. We translate Ptolemy’s theorem from analytic Euclidean geometry into the Poincaré ball model of analytic hyperbolic geometry, which is based on the Möbius addition and its associated symmetry gyrogroup. The translation of Ptolemy’s theorem from Euclidean geometry into hyperbolic geometry is achieved by means of hyperbolic trigonometry, called gyrotrigonometry, to which the Poincaré ball model gives rise, and by means of the duality of trigonometry and gyrotrigonometry.
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24

Mochizuki, Shinichi. "Galois Sections in Absolute Anabelian Geometry." Nagoya Mathematical Journal 179 (2005): 17–45. http://dx.doi.org/10.1017/s0027763000025599.

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AbstractWe show that isomorphisms between arithmetic fundamental groups of hyperbolic curves over p-adic local fields preserve the decomposition groups of all closed points (respectively, closed points arising from torsion points of the underlying elliptic curve), whenever the hyperbolic curves in question are isogenous to hyperbolic curves of genus zero defined over a number field (respectively, are once-punctured elliptic curves [which are not necessarily defined over a number field]). We also show that, under certain conditions, such isomorphisms preserve certain canonical “integral structures” at the cusps [i.e., points at infinity] of the hyperbolic curve.
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25

Ungar, Abraham A. "When Four Cyclic Antipodal Pairs Are Ordered Counterclockwise in Euclidean and Hyperbolic Geometry." Symmetry 16, no. 6 (June 11, 2024): 729. http://dx.doi.org/10.3390/sym16060729.

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A cyclic antipodal pair of a circle is a pair of points that are the intersection of the circle with the diameter of the circle. In this article, a recent proof of Ptolemy’s Theorem—simultaneously in both (i) Euclidean geometry and (ii) the relativistic model of hyperbolic geometry (also known as the Klein model)—motivates the study of four cyclic antipodal pairs of a circle, ordered arbitrarily counterclockwise. The translation of results from Euclidean geometry into hyperbolic geometry is obtained by means of hyperbolic trigonometry, called gyrotrigonometry, to which Einstein addition gives rise. Identities that extend the Pythagorean identity in both Euclidean and hyperbolic geometry are obtained.
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26

Long, D. D., and A. W. Reid. "Virtually spinning hyperbolic manifolds." Proceedings of the Edinburgh Mathematical Society 63, no. 2 (December 5, 2019): 305–13. http://dx.doi.org/10.1017/s0013091519000324.

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AbstractWe give a new proof of a result of Sullivan [Hyperbolic geometry and homeomorphisms, in Geometric topology (ed. J. C. Cantrell), pp. 543–555 (Academic Press, New York, 1979)] establishing that all finite volume hyperbolic n-manifolds have a finite cover admitting a spin structure. In addition, in all dimensions greater than or equal to 5, we give the first examples of finite-volume hyperbolic n-manifolds that do not admit a spin structure.
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27

IZUMIYA, SHYUICHI, DONGHE PEI, and TAKASI SANO. "SINGULARITIES OF HYPERBOLIC GAUSS MAPS." Proceedings of the London Mathematical Society 86, no. 2 (March 2003): 485–512. http://dx.doi.org/10.1112/s0024611502013850.

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In this paper we adopt the hyperboloid in Minkowski space as the model of hyperbolic space. We define the hyperbolic Gauss map and the hyperbolic Gauss indicatrix of a hypersurface in hyperbolic space. The hyperbolic Gauss map has been introduced by Ch. Epstein [J. Reine Angew. Math. 372 (1986) 96–135] in the Poincaré ball model, which is very useful for the study of constant mean curvature surfaces. However, it is very hard to perform the calculation because it has an intrinsic form. Here, we give an extrinsic definition and we study the singularities. In the study of the singularities of the hyperbolic Gauss map (indicatrix), we find that the hyperbolic Gauss indicatrix is much easier to calculate. We introduce the notion of hyperbolic Gauss–Kronecker curvature whose zero sets correspond to the singular set of the hyperbolic Gauss map (indicatrix). We also develop a local differential geometry of hypersurfaces concerning their contact with hyperhorospheres.2000 Mathematical Subject Classification: 53A25, 53A05, 58C27.
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28

Manin, Yu I. "Three-dimensional hyperbolic geometry as ∞-adic Arakelov geometry." Inventiones mathematicae 104, no. 1 (December 1991): 223–43. http://dx.doi.org/10.1007/bf01245074.

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29

Guo, Ren. "A Characterization of Hyperbolic Geometry among Hilbert Geometry." Journal of Geometry 89, no. 1-2 (September 22, 2008): 48–52. http://dx.doi.org/10.1007/s00022-008-1989-0.

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30

Hongnan Chen. "A Steward inequality in the Hyperbolic Geometry." Journal of Electrical Systems 20, no. 10s (July 10, 2024): 2326–33. http://dx.doi.org/10.52783/jes.5579.

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The main aim of this study is to show that the steward inequality holds for any hyperbolic domain and distinct points , where denote the hyperbolic metric in and be a hyperbolic geodesic triangle with vertices and sides and be a point on .
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31

Zhou, Yuansheng, and Tatyana O. Sharpee. "Hyperbolic geometry of gene expression." iScience 24, no. 3 (March 2021): 102225. http://dx.doi.org/10.1016/j.isci.2021.102225.

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32

Fei, Bao Jun, and Zhi Gang Li. "Relativistic Velocity and Hyperbolic Geometry." Physics Essays 10, no. 2 (June 1997): 248–55. http://dx.doi.org/10.4006/1.3028713.

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33

Mejia, Diego, and C. David Minda. "Hyperbolic geometry ink-convex regions." Pacific Journal of Mathematics 141, no. 2 (February 1, 1990): 333–54. http://dx.doi.org/10.2140/pjm.1990.141.333.

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34

Shenitzer, Abe. "How Hyperbolic Geometry Became Respectable." American Mathematical Monthly 101, no. 5 (May 1994): 464. http://dx.doi.org/10.2307/2974912.

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35

Farup, Ivar. "Hyperbolic geometry for colour metrics." Optics Express 22, no. 10 (May 14, 2014): 12369. http://dx.doi.org/10.1364/oe.22.012369.

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36

KIM, INKANG, and JOHN R. PARKER. "Geometry of quaternionic hyperbolic manifolds." Mathematical Proceedings of the Cambridge Philosophical Society 135, no. 2 (September 2003): 291–320. http://dx.doi.org/10.1017/s030500410300687x.

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37

Bal, Guillaume. "Ray transforms in hyperbolic geometry." Journal de Mathématiques Pures et Appliquées 84, no. 10 (October 2005): 1362–92. http://dx.doi.org/10.1016/j.matpur.2005.02.001.

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38

Marshall, T. H. "Hyperbolic geometry and reflection groups." Bulletin of the Australian Mathematical Society 53, no. 1 (February 1996): 173–74. http://dx.doi.org/10.1017/s0004972700016853.

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39

Gramlich, Ralf. "On the hyperbolic symplectic geometry." Journal of Combinatorial Theory, Series A 105, no. 1 (January 2004): 97–110. http://dx.doi.org/10.1016/j.jcta.2003.10.005.

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40

Wildberger, N. J. "Universal hyperbolic geometry I: trigonometry." Geometriae Dedicata 163, no. 1 (June 8, 2012): 215–74. http://dx.doi.org/10.1007/s10711-012-9746-9.

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41

Ruggiero, Rafael O. "Expansive dynamics and hyperbolic geometry." Boletim da Sociedade Brasileira de Matem�tica 25, no. 2 (September 1994): 139–72. http://dx.doi.org/10.1007/bf01321305.

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42

Bielawski, Roger, and Lorenz Schwachhöfer. "Pluricomplex Geometry and Hyperbolic Monopoles." Communications in Mathematical Physics 323, no. 1 (July 14, 2013): 1–34. http://dx.doi.org/10.1007/s00220-013-1761-7.

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43

Shenitzer, Abe. "How Hyperbolic Geometry Became Respectable." American Mathematical Monthly 101, no. 5 (May 1994): 464–70. http://dx.doi.org/10.1080/00029890.1994.11996976.

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44

Corlette, Kevin. "Archimedean Superrigidity and Hyperbolic Geometry." Annals of Mathematics 135, no. 1 (January 1992): 165. http://dx.doi.org/10.2307/2946567.

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45

Popescu, Gelu. "Hyperbolic geometry on noncommutative balls." Documenta Mathematica 14 (2009): 595–651. http://dx.doi.org/10.4171/dm/283.

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46

Parker, John R., and Ser Peow Tan. "Caroline Series and Hyperbolic Geometry." Notices of the American Mathematical Society 70, no. 03 (March 1, 2023): 1. http://dx.doi.org/10.1090/noti2651.

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47

Cesaratto, E., S. Grynberg, R. Hansen, and M. Piacquadio. "Multifractal spectra and hyperbolic geometry." Chaos, Solitons & Fractals 6 (January 1995): 75–82. http://dx.doi.org/10.1016/0960-0779(95)80013-7.

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48

Knüppel, Frieder. "Transversals in plane hyperbolic geometry." Journal of Geometry 105, no. 1 (October 27, 2013): 13–20. http://dx.doi.org/10.1007/s00022-013-0187-x.

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49

Altmann, Kristina, and Ralf Gramlich. "On the hyperbolic unitary geometry." Journal of Algebraic Combinatorics 31, no. 4 (September 1, 2009): 547–83. http://dx.doi.org/10.1007/s10801-009-0200-5.

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50

Lindstrom, Scott B., and Paul Vrbik. "Phase Portraits of Hyperbolic Geometry." Mathematical Intelligencer 41, no. 3 (April 16, 2019): 1–9. http://dx.doi.org/10.1007/s00283-019-09882-y.

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