# Talk:Chain duality III (Ex)

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Let $\varphi:TM\to M$ be an element of $M\otimes_{\mathbb A}M$. | Let $\varphi:TM\to M$ be an element of $M\otimes_{\mathbb A}M$. | ||

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We have to check the equality of | We have to check the equality of |

## Revision as of 11:22, 1 June 2012

We check this for objects .

Let be an element of .

We have to check the equality of and .