A Certain Exact Sequence
A Certain Exact Sequence
复制标题
某个精确的序列
DOI:
10.2307/1969511
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发表时间:
1950
影响因子:
4.9
通讯作者:
J. Whitehead
中科院分区:
文献类型:
--
作者:
J. Whitehead
Page INTRODUCTION 51 CHAPTER I. THE SEQUENCE 2(C, A) 53 1. Definition of 2(C, A) 53 2. The secondary modular boundary operator 55 3. Induced homomorphisms of 2 55 4. Combinatorial realizability 57 CHAPTER II. THE GROUP r(A). . 60 5. Definition of r(A) 60 6. Induced homomorphisms of r(A) 64 7. Relation to tensor products 67 8. "A" finitely generated 67 9. Direct systems 70 CHAPTER III. THE SEQUENCE 2(K) 71 10. Definition of 2(K) 71 11. The invariance of 2(K) 73 12. The sufficiency of 2(K) 75 13. Expression for r3(K) 75 14. Geometrical realizability 77 15. q-types 81 CHAPTER IV. THE PONTRJAGIN SQUARES 83 16. The main theorem 83 17. Secondary boundary operators 92 18. The calculation of 24(K) 97 CHAPTER V. THE SEQUENCE OF A GENERAL SPACE . . 98 19. The complex K(X) 98 20. The maps K and X 101 21. The sequence 2(X) 106 APPENDIX A. ON SPACES DOMINATED BY COMPLEXES...... . 107 APPENDIX B. ON SEPARATION COCHAINS 108