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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: 4,352
Jun 14th 2014, 01:54 AM

• Replies: 0
• Views: 4,255
Feb 11th 2011, 11:34 AM
3. ### List of rules used to moderate MHF - please read carefully.

• Replies: 0
• Views: 2,789
Jul 19th 2010, 10:33 PM
1. ### boolean product of a matrices

• Replies: 3
• Views: 30,085
Jun 22nd 2008, 12:07 PM
2. ### Composite of relations R and S

• Replies: 3
• Views: 25,754
May 4th 2010, 02:51 PM
3. ### n Choose k Formula

• Replies: 4
• Views: 21,026
Jun 12th 2010, 01:14 PM
4. ### Set Theory Proof

• Replies: 3
• Views: 20,773
Sep 13th 2006, 01:54 PM
5. ### Inequality Induction Proof 2n+1 < 2^n for all integers n>= 3

• Replies: 2
• Views: 20,768
Nov 8th 2011, 10:19 AM
6. ### Math Proof A-(B∩C)=(A-B)∪(A-C).

• Replies: 3
• Views: 15,237
Apr 27th 2012, 07:46 AM
7. ### If you are dealing with a standard deck of cards-how many...data management

• Replies: 2
• Views: 13,799
Sep 30th 2009, 05:20 PM
8. ### prove that if g o f is surjective then g is surjective

• Replies: 7
• Views: 13,411
Jan 18th 2011, 10:41 AM
9. ### Number of possible pair sets

• Replies: 6
• Views: 12,691
Aug 4th 2010, 11:27 PM
10. ### Prove: f is one-to-one iff f is onto

• Replies: 12
• Views: 12,411
Jun 25th 2010, 10:02 AM
11. ### Prove the sqrt(8) is not a rational number

• Replies: 4
• Views: 11,694
May 14th 2016, 08:59 AM
12. ### Discrete Math - Prove that if x is irrational, then 1/x is irrational?

• Replies: 7
• Views: 11,581
Jan 29th 2009, 03:26 AM
13. ### Is this correct? (It deals with A x B x C stuff)

• Replies: 7
• Views: 11,433
Feb 8th 2009, 07:42 AM
14. ### Formal proof of "Law of ecxluded middle"

• Replies: 6
• Views: 11,326
May 23rd 2011, 04:05 PM
15. ### Strong induction

• Replies: 2
• Views: 11,204
Nov 22nd 2008, 01:00 PM
16. ### Proof for Associative Law for Symmetric Difference

• Replies: 9
• Views: 10,933
Dec 7th 2009, 02:21 AM
17. ### Simplify boolean expression.

• Replies: 8
• Views: 10,554
Mar 1st 2011, 05:57 PM
18. ### Witnesses for Big O

• Replies: 7
• Views: 10,545
Mar 11th 2006, 05:57 AM
19. ### Sets and bit strings

• Replies: 9
• Views: 10,288
Jun 9th 2008, 04:46 PM
20. ### cartesian product proofs

• Replies: 6
• Views: 9,714
Oct 29th 2009, 04:48 PM
21. ### Inverse of 3 modulo 7

• Replies: 7
• Views: 9,240
Oct 8th 2012, 11:04 AM
22. ### compostion of functions question - Discrete Math

• Replies: 1
• Views: 9,005
Nov 11th 2006, 11:42 PM
23. ### Inverse Composition of Functions Proof

• Replies: 9
• Views: 8,882
Sep 17th 2007, 05:26 AM
24. ### How many eight-bit strings contain exactly three 0's

• Replies: 7
• Views: 8,508
Dec 4th 2010, 08:06 AM
25. ### Prove that the closed interval [0,1] is a closed set

• Replies: 4
• Views: 8,443
Sep 13th 2012, 04:28 PM
26. ### Show that if A and B are sets with A ⊆ B, then A ∪ B = B.

• Replies: 4
• Views: 8,392
Oct 6th 2013, 04:48 PM
27. ### power set of {a,b,c,d}

• Replies: 1
• Views: 8,308
May 7th 2009, 09:36 AM

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