📚 Recommended Mathematics Books

Topology (Munkres)  |  General Topology (Engelking)  |  Counterexamples in Topology  |  Rudin's Analysis

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I’ve released a new version of my free math ebook.

The main feature of this new release is chapter “Alternative representations of binary relations” where I essentially claim that the following are the same:

This theorem is presented with a commutative diagram.

I have added also some other minor theorems.