# Discrete Math Forum

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

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

• Replies: 4
• Views: 3,875
Jun 14th 2014, 02:54 AM

• Replies: 0
• Views: 3,816
Feb 11th 2011, 12:34 PM
3. ### List of rules used to moderate MHF - please read carefully.

• Replies: 0
• Views: 2,409
Jul 19th 2010, 11:33 PM
1. ### Help with discrete math proof

• Replies: 9
• Views: 456
Dec 16th 2015, 10:48 PM
2. ### help simplifying an expression

• Replies: 1
• Views: 221
Dec 16th 2015, 07:48 PM
3. ### Regular Expressions

• Replies: 4
• Views: 288
Dec 16th 2015, 06:48 PM
4. ### Prove that if A, B, and C are sets and A⊆B, then A×C⊆B×C.

• Replies: 3
• Views: 352
Dec 16th 2015, 01:29 PM
5. ### Find the number of elements in the set P(A:B)={X∈P(A) l B⊆X}.

• Replies: 8
• Views: 473
Dec 16th 2015, 10:36 AM
6. ### How many zero divisors in a ring

• Replies: 0
• Views: 236
Dec 16th 2015, 09:29 AM
7. ### Simple mathematical induction

• Replies: 3
• Views: 268
Dec 13th 2015, 05:33 PM
8. ### Mathematical Induction Proof w/ maximum of a function

• Replies: 4
• Views: 360
Dec 13th 2015, 02:31 PM
9. ### Sum of binomial coefficients multiplied by k^2

• Replies: 5
• Views: 304
Dec 8th 2015, 04:53 PM
10. ### Recurrence relation problem

• Replies: 5
• Views: 469
Dec 6th 2015, 04:00 PM
11. ### prove 17^200 - 1 is divisible by 10

• Replies: 1
• Views: 279
Dec 6th 2015, 01:17 PM
12. ### Help with discrete math problem

• Replies: 2
• Views: 235
Dec 5th 2015, 07:03 PM
13. ### Define the relation R on the set A = {1,7,21,35,36} as: (a, b) ∈ R if GCD(a,b) > 1

• Replies: 6
• Views: 686
Dec 5th 2015, 04:22 PM
14. ### How many solutions are there?

• Replies: 6
• Views: 399
Dec 3rd 2015, 04:49 PM
15. ### Generating function

• Replies: 9
• Views: 461
Dec 3rd 2015, 08:05 AM
16. ### Need starting out tips for 3 questions involving "sets"

• Replies: 2
• Views: 344
Dec 1st 2015, 06:34 PM
17. ### Is there a certain pattern for Kleene closure of a language?

• Replies: 0
• Views: 225
Dec 1st 2015, 08:17 AM
18. ### Need two questions involving "sets" explained to me

• Replies: 6
• Views: 374
Nov 29th 2015, 06:10 PM
19. ### proof: pair up people from different sets; no pair from same set

• Replies: 6
• Views: 440
Nov 26th 2015, 11:14 AM
20. ### Can i change the order of quantifiers in this case?

• Replies: 2
• Views: 295
Nov 24th 2015, 09:28 AM
21. ### a deck of cards, inclusion-exclusion problem

• Replies: 11
• Views: 891
Nov 24th 2015, 08:34 AM
22. ### another Inclusion-Exclusion problem

• Replies: 4
• Views: 308
Nov 24th 2015, 05:02 AM
23. ### Bolean algebra truth table nand gate

• Replies: 7
• Views: 282
Nov 24th 2015, 04:53 AM
24. ### Binary Relations

• Replies: 2
• Views: 272
Nov 23rd 2015, 07:31 AM
25. ### Transitive law in proving p → q ≡ ~q → ~p by deductive reasoning.

• Replies: 3
• Views: 542
Nov 22nd 2015, 09:31 AM
26. ### Need help solving symbolic logic proble

• Replies: 0
• Views: 222
Nov 20th 2015, 10:49 AM

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# prove a function tonne reflexive symmetric and transitive

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