• 대한수학회보
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• 제53권5호
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• pp.1567-1583
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• 2016

In this paper we present the computation of two kinds of cohomotopy groups $[{\Sigma}^n+^4{\mathbb{H}}P^2,S^n]$ and $[{\Sigma}^n+^5{\mathbb{H}}P^2,S^n]$ for a non-negative integer n, where ${\Sigma}^k{\mathbb{H}}P^2$ is the k-fold suspension of quaternionic projec- tive plane ${\mathbb{H}}P^2$.

• Kyungpook Mathematical Journal
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• 제45권3호
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• pp.363-394
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• 2005

In this expository paper we survey basic results on isotropic immersions.