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Dan Christensen

A math enthusiast and creator of DC Proof, an educational freeware program to introduce students to the basic methods of proof. Visit my math blog.

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  • dcproof.com
  • Member for 5 years
  • 171 profile views
  • Last seen May 12 at 3:39

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Top posts (77) All Questions Answers | Votes Newest

4 What are the “undefinable numbers” in real analysis and philosophy? Nov 20 '15
4 “→” is the symbol for material implication. Is there such a thing as “immaterial implication”? Mar 18 '15
4 How do I operate with philosophers if I reject deductive reasoning? Sep 14 '18
3 Can Euclid's Elements be used to rigorously prove 2+2=4? Jun 21 '14
3 What is illogical: 'No one would go to Hitler’s funeral if he was alive today’? Aug 22 '14
3 Is a barber a barber if he doesn't get paid? Aug 13 '18
2 “Kids shout at plants” (relation vs implication?) May 31 '18
2 Understanding hypothetical reasoning and material implication Sep 5 '18
2 Basic Logic: Presuming Truth Sep 10 '18
2 Do mathematical entities transcend duality and cause/effect? Oct 15 '17
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