Erdal Ulualan wrote:

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From: jim stasheff To: Erdal Ulualan Subject: Re: categories Date: Fri, 26 Jan 2001 10:09:26 -0500

Erdal Ulualan wrote:

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Mr. Stasheff;

I am a research assistant in Dumlupýnar University. I am studing category theory. I have some problems If you help me about following questions I

will

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be very grateful to you.

1- If a category C has pullbacs no terminal object, then has C finite product?

2- How can be Simplicial crossed module of groups defined?

3- Is there crossed module of topological groups ?

4- How can be defined "pullback profinite crossed modules" Sincerely

Thank you for everything you have done and you will do. Good days

Dear Erdal,

I am forwarding your question to some friends. Where is Dumlupýnar University?

jim stasheff

Dear stasheff

Thank you for everything. Dumlupinar University is in Turkey. I am waiting your advices.

Sincerely