# Discrete Math Forum

Discrete Math Help Forum: Discrete mathematics, logic, set theory

1. ### Difference equation tutorial: draft of part I

• Replies: 4
• Views: 3,746
Jun 14th 2014, 01:54 AM
2. ### Please read before posting logic questions.

• Replies: 0
• Views: 3,699
Feb 11th 2011, 11:34 AM
3. ### List of rules used to moderate MHF - please read carefully.

• Replies: 0
• Views: 2,324
Jul 19th 2010, 10:33 PM
1. ### Number-of-ways sum.

• Replies: 4
• Views: 473
Jun 27th 2010, 05:32 AM
2. ### 2 proofs that I can't do

• Replies: 9
• Views: 818
Jun 26th 2010, 05:07 PM
3. ### Well defined

• Replies: 4
• Views: 474
Jun 26th 2010, 02:39 PM
4. ### 2 modular arithmetic proofs

• Replies: 1
• Views: 436
Jun 26th 2010, 11:25 AM
5. ### Cyclic permutations

• Replies: 1
• Views: 475
Jun 26th 2010, 11:13 AM
6. ### An advanced set question that I could not solve.

• Replies: 4
• Views: 471
Jun 26th 2010, 09:30 AM
7. ### Prove that f is 1-1 or give a counterexample

• Replies: 5
• Views: 625
Jun 26th 2010, 02:01 AM
8. ### Erdos-Szekeres theorem

• Replies: 1
• Views: 1,154
Jun 25th 2010, 07:07 PM
9. ### Ways to partition [n] (the power set of n)

• Replies: 5
• Views: 1,154
Jun 25th 2010, 02:40 PM
10. ### Prove: f is one-to-one iff f is onto

• Replies: 12
• Views: 10,704
Jun 25th 2010, 10:02 AM
11. ### Pigeon hole principle for odd or even product

• Replies: 1
• Views: 613
Jun 25th 2010, 05:37 AM
12. ### Ordering proof?

• Replies: 7
• Views: 641
Jun 25th 2010, 02:10 AM
13. ### Another really neat theorem!

• Replies: 1
• Views: 469
Jun 25th 2010, 12:36 AM
14. ### Ways to seat men and women alternately around a circular table

• Replies: 1
• Views: 1,706
Jun 24th 2010, 07:21 PM
15. ### Prove or disprove equivalence relation of union and intersection

• Replies: 12
• Views: 5,684
Jun 24th 2010, 12:00 PM
16. ### critical rows - what if there are none?

• Replies: 4
• Views: 2,672
Jun 24th 2010, 10:36 AM
17. ### Prove comnplement function on [n] is bijective

• Replies: 1
• Views: 1,303
Jun 24th 2010, 08:54 AM
18. ### permutation

• Replies: 26
• Views: 1,256
Jun 24th 2010, 08:40 AM
19. ### Puzzling statement in elderly source work

• Replies: 0
• Views: 412
Jun 23rd 2010, 10:25 PM
20. ### Prove equivalence relation

• Replies: 4
• Views: 879
Jun 23rd 2010, 10:25 AM
21. ### Choosing a committee and distributing toppings on pizza.

• Replies: 1
• Views: 1,347
Jun 23rd 2010, 03:02 AM
22. ### Induction help

• Replies: 1
• Views: 380
Jun 22nd 2010, 10:33 PM
23. ### Big-O notation question

• Replies: 1
• Views: 978
Jun 21st 2010, 08:36 PM

• Replies: 4
• Views: 747
Jun 21st 2010, 11:02 AM
25. ### Putnam 1990 A1

• Replies: 6
• Views: 1,044
Jun 20th 2010, 10:23 AM
26. ### Regular Grammar

• Replies: 2
• Views: 580
Jun 20th 2010, 08:58 AM
27. ### Coin Flip

• Replies: 2
• Views: 598
Jun 20th 2010, 06:59 AM
28. ### Probability for exactly one of two events

• Replies: 5
• Views: 2,084
Jun 19th 2010, 12:38 PM

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# prove a function tonne reflexive symmetric and transitive

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