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Discrete Mathematics, Set Theory, and Logic

Discrete Math, Graph Theory, Combinatorics, Recurrence Relations (Difference Equations), Set Theory, General and Symbolic Logic
chisigma
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Difference equation tutorial: draft of part II
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2
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9K
chisigma
chisigma
chisigma
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Difference equation tutorial: draft of part I
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3
Views
9K
chisigma
chisigma
Ackbach
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Please Read Before Posting Logic Questions
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0
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8K
Ackbach
Ackbach
V
multiply indexed matrices
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3
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101
Country Boy
C
L
KE Deduction
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4
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1K
solakis
S
evinda
Why do we get like that the message?
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2
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79
evinda
evinda
evinda
How do we choose the edges?
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2
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104
evinda
evinda
J
Find Proofs for the following 5 propositional logic statements
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2
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886
solakis
S
evinda
Find total number of republications
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22
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329
evinda
evinda
H
Predicate logic
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8
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168
solakis
S
E
Rules of inference
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3
Views
510
solakis
S
mathmari
Logical negation of statements
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6
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149
solakis
S
mathmari
Prove that the statement is always true using the rules of boolean algebra
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9
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198
solakis
S
mathmari
Show that the set is inductive
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10
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184
Klaas van Aarsen
Klaas van Aarsen
evinda
Fractional knapsack
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1
Views
282
Evgeny.Makarov
E
evinda
Master Theorem-Relation of the two functions
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2
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92
evinda
evinda
mathmari
De Morgan Rules - Logical statements
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11
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239
mathmari
mathmari
mathmari
Draw a NAND-gate to get that output
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16
Views
299
mathmari
mathmari
L
Relation composition
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7
Views
224
Evgeny.Makarov
E
mathmari
Translate the statements into set inclusion
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5
Views
142
Klaas van Aarsen
Klaas van Aarsen
L
Defining reflexive relations
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3
Views
175
Country Boy
C
L
The cardinality of the set that is the intersection of all inductive sets.
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0
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72
Line
L
L
Counting the elements in sets
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5
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214
Opalg
Opalg
L
summation and product notation rules
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1
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234
topsquark
topsquark
M
2.11.2: Compute change.
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1
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489
moodtl32
M
L
Predicate properties
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1
Views
211
Evgeny.Makarov
E
H
Question
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2
Views
226
skeeter
skeeter
Furthark
Attempting to add logic mathematics to a college paper - need your input
Replies
2
Views
823
Furthark
Furthark
C
Pigeonhole Principle Problem
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2
Views
239
Carl
C
F
Proof by induction? No Idea what I should do :(
Replies
4
Views
224
Opalg
Opalg
A
Question about Successor Function
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2
Views
391
Evgeny.Makarov
E
E
proofs with real numbers
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9
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467
Country Boy
C
M
Binomial problem.
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4
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317
Country Boy
C
Peter
ZFC and the Axiom of Power Sets ...
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2
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287
Peter
Peter
Dhamnekar Winod
[SOLVED] Sequences and series
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3
Views
210
MarkFL
M
C
Discrete math can you solve immediately
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0
Views
219
ceasertr
C
evinda
Construct grammar and find its type
2
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26
Views
676
Klaas van Aarsen
Klaas van Aarsen
Julio
Bipartite graphs
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1
Views
576
caffeinemachine
caffeinemachine
G
Euler's totient function
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1
Views
287
GJA
G
mathmari
Optimal time for scheduling the tasks
Replies
1
Views
176
Klaas van Aarsen
Klaas van Aarsen
mathmari
Total weight of Huffman Code
Replies
1
Views
165
Klaas van Aarsen
Klaas van Aarsen
A
Help with a simple deduction
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0
Views
154
agapito
A
evinda
Find the general formula of the recurrence relation
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13
Views
319
evinda
evinda
evinda
Construct circuit that implements truth table
2
Replies
45
Views
937
evinda
evinda
evinda
Truth tables
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2
Views
206
evinda
evinda
evinda
Find truth value of propositions
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17
Views
324
evinda
evinda
A
Godelian self-reference
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0
Views
270
agapito
A
D
Symbolic logic
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1
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473
HallsofIvy
H
P
Please help with bool algebra and logic things!
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2
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549
Evgeny.Makarov
E
F
Introduction to Set Theory Stream
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1
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380
Klaas van Aarsen
Klaas van Aarsen
J
Probability of Having a Totally Dominating Set (Probabilistic Methods)
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1
Views
650
joypav
J
J
Minimum Degree of a Random Graph (Probabilistic Method)
Replies
1
Views
475
joypav
J
J
Turans Theorem (Dual?)
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1
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411
joypav
J
mathmari
[SOLVED] Give a set and a relation that satisfies the properties
Replies
10
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844
mathmari
mathmari
mathmari
Hilbert's hotel and busses : Injectivity - Surjectivity
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7
Views
803
Klaas van Aarsen
Klaas van Aarsen
mathmari
Show that ~ is an equivalence relation
Replies
2
Views
464
Evgeny.Makarov
E
mathmari
[SOLVED] Intesection of intervals
Replies
8
Views
570
mathmari
mathmari
P
Trouble with understanding section of FOL completeness proof
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1
Views
365
Evgeny.Makarov
E
P
First-order logic formula satisfiable only if the domain of the valuation is infinite?
Replies
2
Views
435
pooj4
P
mathmari
Statements about the set 2^M
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5
Views
521
topsquark
topsquark
mathmari
[SOLVED] Sets so that the cartesian product is commutative
Replies
2
Views
417
mathmari
mathmari
P
Proving in first order logic for some arbitrary valuations of sigma in Machover's text
Replies
1
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413
Evgeny.Makarov
E
mathmari
[SOLVED] Induction: Each square can be covered by L-stones
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5
Views
471
mathmari
mathmari
Z
Help proving prime and permutation
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1
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354
Klaas van Aarsen
Klaas van Aarsen
J
A Subset of a Graph with No Perfect Matching
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1
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468
joypav
J
V
first state whether it can be solved using the Master Theorem, and if it can then use that. Otherwis
Replies
1
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524
HallsofIvy
H
G
sequence - inhomogeneous recursion
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2
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515
goohu
G
mathmari
Prime implicants and disjunctive minimal form
Replies
6
Views
699
Klaas van Aarsen
Klaas van Aarsen
C
Topology Munkres Chapter 1 exercise 2 e- Set theory
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3
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648
Evgeny.Makarov
E
C
Topology Munkres Chapter 1 exercise 2 b and c- Set theory equivalent statements
Replies
1
Views
534
Euge
Euge
S
How to prove the equality?
Replies
1
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563
Cbarker1
C
L
Do Gödel numbers can be used to derermine the usefulness of an infinite set as a complete whole?
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0
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420
Line
L
Y
Cartesian Product - Proof
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5
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2K
Olinguito
Olinguito
mathmari
Are the questions decidable?
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1
Views
893
Evgeny.Makarov
E
Y
Operations on sets
Replies
2
Views
607
HallsofIvy
H
mathmari
Are the instances of PCP solvable?
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0
Views
487
mathmari
mathmari
mathmari
Linear Codes : Error detection
Replies
0
Views
432
mathmari
mathmari
H
Number of ways to divide a square grid in half
Replies
3
Views
1K
Opalg
Opalg
A
Help with proof of equivalence
Replies
1
Views
567
Evgeny.Makarov
E
S
Discrete maths problem - tracing an algorithm
Replies
3
Views
682
Ackbach
Ackbach
mathmari
[SOLVED] Karnaugh Diagram
Replies
22
Views
2K
mathmari
mathmari
mathmari
Quine-McCluskey method: Prime implicants - disjunctive minimal forms
Replies
3
Views
555
Klaas van Aarsen
Klaas van Aarsen
D
Stuck on Derivation (Natural Deduction)
Replies
1
Views
486
Evgeny.Makarov
E
K
Intro to Logic (prove sequents)
Replies
1
Views
525
Evgeny.Makarov
E
mathmari
Two-element Boolean algebra: How are the equalities derived?
Replies
13
Views
2K
Klaas van Aarsen
Klaas van Aarsen
E
isomorphism of logic, arithmetic, and set theory
Replies
2
Views
1K
Eric
E
J
Predicate Logic: Semantics and Validity
Replies
1
Views
3K
Evgeny.Makarov
E
D
Mathematical Induction
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1
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1K
Olinguito
Olinguito
M
prove primitive recursive
Replies
6
Views
2K
Evgeny.Makarov
E
G
Set Identity Proof
Replies
1
Views
658
Evgeny.Makarov
E
C
Equivalence Class
Replies
1
Views
710
GJA
G
C
[SOLVED] Set Theory
Replies
1
Views
668
Olinguito
Olinguito
A
Basic arithmetic proof
Replies
1
Views
669
Evgeny.Makarov
E
H
set / class
Replies
1
Views
526
castor28
castor28
V
Can a given basis of a vector space (V,O_1,O_2) can it represent two different graphs
Replies
2
Views
609
vs140580
V
L
Truth Table Precedence
Replies
5
Views
943
Evgeny.Makarov
E
J
Resolution method and counterexample
Replies
0
Views
2K
joonteee
J
Q
Symmetrical group
Replies
1
Views
642
Olinguito
Olinguito
Q
Divisibility Problem
Replies
3
Views
909
Evgeny.Makarov
E
F
Transfinite induction
Replies
1
Views
592
Country Boy
C
S
proper sub set
Replies
1
Views
621
joypav
J
H
Discrete Mathematics - Define a relation R on S of at least four order pairs
Replies
1
Views
628
Olinguito
Olinguito
S
Q: Let S = {1,2,5,6 } Define a relation R on S of at least four order pairs, as (a,b)  R iff a*b is
Replies
3
Views
1K
Evgeny.Makarov
E
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