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Universal Derivation

Using universal derivation (ud)

From  Brian Rabern on March 16th, 2017 0 likes 246 plays 0  

Introducing L3 derivations

Talking through problem 3:5 introducing the quantifier inference rules.

From  Brian Rabern on March 16th, 2017 0 likes 410 plays 0  

De Morgan's Law T63

A derivation of a theorem for the derived rule dm.

From  Brian Rabern on February 10th, 2017 2 likes 541 plays 0  

Assumptions for conditional derivation

A look at Week 3 exercise 1:18 and the multiple assumptions and show lines involved.

From  Brian Rabern on February 5th, 2017 1 likes 647 plays 0  

Derivation dub

doing some derivations for fun

From  Brian Rabern on January 29th, 2017 2 likes 541 plays 0