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image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Acta Mathematica Sin...arrow_drop_down
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Acta Mathematica Sinica English Series
Article . 1990 . Peer-reviewed
License: Springer TDM
Data sources: Crossref
image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
zbMATH Open
Article . 1990
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Trigonometry (II)

Trigonometry. II
descriptionPublicationkeyboard_double_arrow_right Article 01 Mar 1990 English Publisher:Springer Science and Business Media LLCJournal:Acta Mathematica Sinica, volume 6, pages 80-86 (issn: 1439-8516, eissn: 1439-7617, Copyright policy )
Authors: Yu, Yanlin;

doi: 10.1007/bf02108867

Trigonometry (II)

Abstract

Summary: [For part I, cf. ibid. 1, 153-160 (1985; Zbl 0599.53010).] This paper considers geodesic triangles in a Riemannian manifold M. First we imbed the set \(\Sigma\) of geodesic triangles in M into a big space E, then find some equations in E satisfied by tangent vectors of \(\Sigma\). Finally we give an application of the result.

Related Organizations
Keywords

Local Riemannian geometry, trigonometry, geodesic triangles, Other special differential geometries, Lobachevskij geometry, Riemannian elliptic geometry

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
2
Average
Top 10%
Average
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