• Bulletin of the Korean Mathematical Society
• /
• v.53 no.5
• /
• pp.1567-1583
• /
• 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
• /
• v.45 no.3
• /
• pp.363-394
• /
• 2005

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