| COUNTEREXAMPLES IN TOPOLOGICAL HOMOLOGY |
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| COUNTEREXAMPLES IN TOPOLOGICAL HOMOLOGY |
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| PROBLEMS | SOLUTIONS |
TH1.
A unital commutative Banach algebra with a maximal ideal M of codimension 1 and a Banach A-module X such that H2(A,X) = 0 but H2(M,X)  0.
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 TH1.dvi TH1.htm TH1.ps TH1.pdf |
| TH2. A non-split short complex of Banach spaces whose dual splits. |
TH2.dviTH2.htmTH2.psTH2.pdf |
| TH3. A weakly amenable commutative Banach algebra which is not amenable. |
TH3.dviTH3.htmTH3.psTH3.pdf |
| TH4. A derivation on an algebra which is not inner. |
TH4.dviTH4.htmTH4.psTH4.pdf |
| TH5. A closed unbounded *-derivation on a C*-algebra A. |
TH5.dviTH5.htmTH5.psTH5.pdf |
| TH6. A Banach algebra for which every linear operator is a derivation. |
TH6.dviTH6.htmTH6.psTH6.pdf |
| TH7. A non-closable unbounded *-derivation. |
TH7.dviTH7.htmTH7.psTH7.pdf |
