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Shun-ichi Tachibana

Ochanomizu University

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Publication

Featured researches published by Shun-ichi Tachibana.

Discrete Mathematics | 1986

The maximal number of induced complete bipartite graphs

Béla Bollobás; Chie Nara; Shun-ichi Tachibana

Abstract The aim of this paper is to determine the maximal number of induced K(t, t) subgraphs in graphs of given order and in graphs of given size.

Discrete Mathematics | 1983

A note on upper bounds for some Ramsey numbers

Chie Nara; Shun-ichi Tachibana

Abstract We show that r(3,n)⩽( n 2 )−5 for n⩾13, and r(4,n)⩽( n+1 3 )−1 for n⩾12.

Tohoku Mathematical Journal | 1969

ON CONFORMAL KILLING TENSOR IN A RIEMANNIAN SPACE

Shun-ichi Tachibana

Tohoku Mathematical Journal | 1960

ANALYTIC TENSOR AND ITS GENERALIZATION

Shun-ichi Tachibana

Journal of The Mathematical Society of Japan | 1969

On the integrability of Killing-Yano's equation

Shun-ichi Tachibana; Toyoko Kashiwada

Tohoku Mathematical Journal | 1962

ON THE ALMOST-COMPLEX STRUCTURE OF TANGENT BUNDLES OF RIEMANNIAN SPACES

Shun-ichi Tachibana; Masafumi Okumura

Tohoku Mathematical Journal | 1965

On harmonic tensors in compact Sasakian spaces

Shun-ichi Tachibana

Tohoku Mathematical Journal | 1959

On almost-analytic vectors in certain almost-Hermitian manifolds

Shun-ichi Tachibana

Proceedings of the Japan Academy | 1974

A theorem on Riemannian manifolds of positive curvature operator

Shun-ichi Tachibana

Tohoku Mathematical Journal | 1970

On a Riemannian space admitting more than one Sasakian structures

Shun-ichi Tachibana; Wen Neng Yu

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Chie Nara

Tokai University

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Shigeru Ishihara

Tokyo Gakugei University

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Masafumi Okumura

Nihon University

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Masami Sekizawa

Tokyo Gakugei University

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Satoshi Koto

Niigata University

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Toyoko Kashiwada

Ochanomizu University

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Béla Bollobás

University of Memphis

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Wen Neng Yu

National Taiwan University

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