# Discrete Math Forum

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

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

• Replies: 4
• Views: 4,153
Jun 14th 2014, 01:54 AM

• Replies: 0
• Views: 4,070
Feb 11th 2011, 11:34 AM
3. ### List of rules used to moderate MHF - please read carefully.

• Replies: 0
• Views: 2,602
Jul 19th 2010, 10:33 PM
1. ### wheel grAPH

• Replies: 1
• Views: 707
Oct 5th 2013, 07:31 AM
2. ### relation

• Replies: 1
• Views: 384
Oct 5th 2013, 07:26 AM
3. ### Want to know an intuitive but valid way of making metric sets

• Replies: 2
• Views: 378
Oct 4th 2013, 11:11 AM
4. ### Composite Functions

• Replies: 1
• Views: 766
Oct 3rd 2013, 02:18 AM
5. ### Prove that 2n^2 + n is odd if and only if cos(npi/2) is even

• Replies: 3
• Views: 2,590
Oct 2nd 2013, 04:28 PM
6. ### How to disprove that all numbers A1,A2,A3, A4....An are less than their average?

• Replies: 3
• Views: 508
Oct 2nd 2013, 02:53 PM
7. ### Help proving NAND gate is equaivalent to an OR gate

• Replies: 4
• Views: 453
Oct 1st 2013, 09:39 PM
8. ### Using First DeMorgan's Law to Derive the Second

• Replies: 5
• Views: 6,742
Oct 1st 2013, 04:45 PM
9. ### Question with power sets

• Replies: 3
• Views: 781
Oct 1st 2013, 12:42 PM
10. ### How would one make this statement false?

• Replies: 2
• Views: 479
Oct 1st 2013, 06:08 AM
11. ### Proof that there exists irrational x,y such that x^y is rational. Valid or not?

• Replies: 4
• Views: 1,160
Sep 30th 2013, 02:30 PM
12. ### Which one of following Boolean expressions is not logically equivalent to all of the

• Replies: 1
• Views: 2,089
Sep 29th 2013, 02:56 PM
13. ### Simple Proof table problem

• Replies: 8
• Views: 684
Sep 28th 2013, 09:31 PM
14. ### Finding 1-1 function

• Replies: 21
• Views: 1,485
Sep 28th 2013, 08:55 PM
15. ### Prove using mathematical proof

• Replies: 6
• Views: 540
Sep 28th 2013, 06:41 AM
16. ### Totient function and divisibility

• Replies: 4
• Views: 859
Sep 28th 2013, 06:28 AM
17. ### k-tuples

• Replies: 2
• Views: 528
Sep 27th 2013, 12:17 PM
18. ### use diagonalization to prove uncountability

• Replies: 15
• Views: 1,197
Sep 26th 2013, 09:48 AM
19. ### Well ordering of the integers

• Replies: 6
• Views: 824
Sep 25th 2013, 02:00 PM
20. ### Using DeMorgan's Law, write an expression for the complement of F

• Replies: 4
• Views: 3,373
Sep 24th 2013, 10:39 PM
21. ### Find the minimum cost Sum Of Prods and Product of Sum forms for the function

• Replies: 1
• Views: 1,507
Sep 24th 2013, 10:17 AM
22. ### Binary Sequence combinatorics

• Replies: 5
• Views: 923
Sep 24th 2013, 10:11 AM
23. ### Proving satisfiability and validity

• Replies: 4
• Views: 719
Sep 23rd 2013, 01:07 PM
24. ### prove the set is uncountable

• Replies: 1
• Views: 679
Sep 23rd 2013, 09:17 AM
25. ### Show that each conditional statement is a tautology without using truth tables.

• Replies: 3
• Views: 4,167
Sep 21st 2013, 02:53 PM
26. ### A simple question on multivalued relations

• Replies: 3
• Views: 620
Sep 20th 2013, 06:41 AM

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