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Additional Help with Order Isomorphisms

  1. Mar 27, 2012 #1
    I'm curious if there is a site like Paul's Online Notes for abstract algebra classes on set theory, functions, etc.

    Lately I've been having trouble with isomorphisms of posets, so if there is a resource where I could view some proofs of theorems relating to isomorphisms of posets that would be awesome.

    Thanks for any help you can offer, my textbook is fine - I'd just like some more practice.
  2. jcsd
  3. Mar 28, 2012 #2
    I found a site called proofwiki but it did not have many proofs (seemed like it was a startup). Maybe you guys know of some larger databases of proofs?
  4. Apr 3, 2012 #3
    This will be the last time I'll bump this.
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