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# Discrete Math Forum

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

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

• Replies: 4
• Views: 4,563
Jun 14th 2014, 01:54 AM
2. ### List of rules used to moderate MHF - please read carefully.

• Replies: 0
• Views: 2,959
Jul 19th 2010, 10:33 PM

• Replies: 0
• Views: 4,463
Feb 11th 2011, 11:34 AM
1. ### !P(x) or P(!x)

• Replies: 2
• Views: 398
Mar 18th 2009, 01:47 PM
2. ### # of n-digit ternary sequences that contain...

• Replies: 0
• Views: 612
Apr 13th 2010, 08:30 PM
3. ### ∀n(3n ≤ 4n) Domain: all integers ??

• Replies: 2
• Views: 1,110
Dec 26th 2012, 07:11 PM
4. ### [SOLVED] Θ-classes to arrange functions?

• Replies: 1
• Views: 846
Mar 22nd 2010, 05:33 AM
5. ### "Denseness" and addition of irrationals

• Replies: 6
• Views: 716
Jan 13th 2009, 11:29 PM
6. ### "Fix" an element, as opposed to "consider" an element?

• Replies: 2
• Views: 464
Mar 3rd 2010, 02:10 AM
7. ### "Lines in the plane" (I don't get it)

• Replies: 2
• Views: 616
Dec 4th 2009, 02:30 PM
8. ### "Logically possible" vs "truth table-possible"

• Replies: 8
• Views: 2,723
Apr 8th 2011, 02:52 PM
9. ### [SOLVED] "Mathematical Logic" by Cori and Lascar: Incomplete proof of Lemma 1.9?

• Replies: 4
• Views: 735
Jun 3rd 2011, 08:46 AM
10. ### "Non-determistic" Graph Centrality?

• Replies: 2
• Views: 663
Jan 13th 2008, 05:42 AM
11. ### "only if" Conditional Statements

• Replies: 1
• Views: 803
Mar 23rd 2013, 03:37 PM
12. ### "order of" equality question

• Replies: 3
• Views: 582
Sep 3rd 2007, 09:18 PM
13. ### "Prove by Direct Method: If x is an even integer, then x^2 - 6x + 5 is odd"

• Replies: 4
• Views: 457
Oct 30th 2016, 02:21 PM
14. ### "The set of rational numbers...."

• Replies: 4
• Views: 499
Dec 2nd 2008, 08:32 PM
15. ### "Top 12" - algorithm?

• Replies: 0
• Views: 469
Mar 5th 2014, 03:31 AM
16. ### "Two Sided" series

• Replies: 0
• Views: 699
Dec 4th 2008, 09:46 PM
17. ### "Uncountable" Propositional Language

• Replies: 0
• Views: 690
May 29th 2010, 09:23 PM
18. ### "x divides y" proof

• Replies: 1
• Views: 1,392
Jun 13th 2014, 09:17 PM
19. ### 'Plane' proof

• Replies: 4
• Views: 854
Dec 27th 2007, 03:01 AM
20. ### 'Proof' help needed please...

• Replies: 4
• Views: 594
Feb 27th 2010, 12:39 PM
21. ### 'Proof', is my answer right? Plz check.

• Replies: 5
• Views: 709
Mar 1st 2010, 04:54 PM
22. ### 'simple' proof

• Replies: 1
• Views: 708
Dec 7th 2007, 11:46 AM
23. ### 'simple' proofs

• Replies: 3
• Views: 907
Oct 30th 2007, 12:12 PM
24. ### 'strong' tournaments

• Replies: 1
• Views: 266
Apr 26th 2017, 06:22 PM
25. ### ((a-->b)-->c)-->(a--(b-->C))

• Replies: 3
• Views: 367
Apr 22nd 2010, 10:24 AM
26. ### (Basic) Combinatorial Identity.

• Replies: 1
• Views: 888
Feb 1st 2010, 10:12 PM
27. ### (Dis)proving that this function is injective

• Replies: 9
• Views: 918
Nov 17th 2013, 09:18 AM
28. ### (Discrete math)Prove (x^2+6x+y=0) <---> y<=c

• Replies: 3
• Views: 387
Feb 17th 2017, 03:29 PM
29. ### (Discrete Mathmatics) Defining a relational set

• Replies: 1
• Views: 785
Mar 8th 2009, 06:36 AM
30. ### (Graph Theory)Prove that graph X is a tree.

• Replies: 1
• Views: 1,153
Aug 1st 2011, 03:30 AM

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