
Accession Number : AD0667377
Title : DIFFERENTIABLE ACTIONS OF HOMOTOPY SEVEN SPHERES, II.
Descriptive Note : Technical rept.,
Corporate Author : PENNSYLVANIA UNIV PHILADELPHIA
Personal Author(s) : Montgomery,D. ; Yang,C. T.
Report Date : 04 MAR 1968
Pagination or Media Count : 19
Abstract : The paper presents a theorem which shows that there are exactly six unoriented homotopy 7spheres not diffeomorphic to one another such that on each of them there is a free differentiable action of the circle group. Moreover, on any homotopy 7sphere, if there exists a free differentiable action of the circle group, then there are infinitely many topologically distinct from one another.
Descriptors : (*ALGEBRAIC TOPOLOGY, THEOREMS), (*GROUPS(MATHEMATICS), ALGEBRAIC TOPOLOGY), MAPPING(TRANSFORMATIONS), INVARIANCE, COMPLEX VARIABLES, COMPLEX NUMBERS, NUMERICAL METHODS AND PROCEDURES, RINGS(MATHEMATICS)
Subject Categories : Theoretical Mathematics
Distribution Statement : APPROVED FOR PUBLIC RELEASE