# Discrete Math Forum

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

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

• Replies: 4
• Views: 4,537
Jun 14th 2014, 01:54 AM

• Replies: 0
• Views: 4,428
Feb 11th 2011, 11:34 AM
3. ### List of rules used to moderate MHF - please read carefully.

• Replies: 0
• Views: 2,937
Jul 19th 2010, 10:33 PM
1. ### Proving an expression with induction

• Replies: 4
• Views: 312
Nov 23rd 2013, 02:05 AM
2. ### Book help

• Replies: 1
• Views: 377
Nov 21st 2013, 12:39 PM
3. ### Determine whether x^3 is O(g(x)) for each of these functions g(x).

• Replies: 4
• Views: 4,319
Nov 20th 2013, 11:12 AM
4. ### Combinatorics Pigeonhole problem

• Replies: 12
• Views: 931
Nov 19th 2013, 05:45 PM
5. ### Combinatorics - choosing exactly k pairs from n

• Replies: 2
• Views: 524
Nov 18th 2013, 11:49 AM
6. ### What is the equivalence class of (3, 5) with respect to the equivalence relation?

• Replies: 2
• Views: 1,066
Nov 18th 2013, 10:09 AM
7. ### Checking relations for reflexivity, transitivity, symmetry and anti symmetry.

• Replies: 9
• Views: 951
Nov 18th 2013, 04:26 AM
8. ### Prove that R is an equivalence relation. Determine the distinct equivalence classes.

• Replies: 2
• Views: 2,165
Nov 17th 2013, 04:12 PM
9. ### (Dis)proving that this function is injective

• Replies: 9
• Views: 912
Nov 17th 2013, 09:18 AM
10. ### convers and contrapositive question

• Replies: 2
• Views: 746
Nov 16th 2013, 08:25 AM
11. ### Predicate Logic: Clarification of Concepts

• Replies: 7
• Views: 476
Nov 16th 2013, 06:18 AM
12. ### Proof by induction: n choose 3 triangles are formed by n lines

• Replies: 1
• Views: 768
Nov 15th 2013, 02:08 PM
13. ### Counting problem

• Replies: 1
• Views: 389
Nov 15th 2013, 05:10 AM
14. ### How many possibilities are there for dividing a string to substrings, of any length?

• Replies: 4
• Views: 504
Nov 14th 2013, 08:39 AM
15. ### theorem statement

• Replies: 2
• Views: 534
Nov 13th 2013, 04:22 AM
16. ### Proof by induction, involving factorials

• Replies: 2
• Views: 653
Nov 12th 2013, 04:21 PM
17. ### Cardinality Proof Help Needed

• Replies: 8
• Views: 885
Nov 9th 2013, 11:11 AM
18. ### A question about n choose k

• Replies: 4
• Views: 558
Nov 6th 2013, 11:30 PM
19. ### A few questions about functions

• Replies: 14
• Views: 725
Nov 6th 2013, 01:32 PM
20. ### induction

• Replies: 22
• Views: 1,334
Nov 4th 2013, 04:53 PM
21. ### Factorials

• Replies: 1
• Views: 354
Nov 4th 2013, 04:19 PM
22. ### set algebra

• Replies: 3
• Views: 409
Nov 3rd 2013, 05:59 PM
23. ### Predicate logic and validity

• Replies: 1
• Views: 395
Nov 3rd 2013, 02:03 PM
24. ### Binomial Theorem proof

• Replies: 1
• Views: 419
Nov 2nd 2013, 04:55 PM
25. ### What is the reflexive closure of R?

• Replies: 3
• Views: 1,332
Nov 2nd 2013, 10:19 AM
26. ### Let R1 and R2 be relations from {1, 2, 3} to {1, 2, 3, 4}. Find

• Replies: 6
• Views: 6,394
Nov 2nd 2013, 10:16 AM

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