Logic and Philosophy of Mathematics

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Did I discover “Angelo Cannata’s paradox”?

Last post by Angelo Cannata « Sat Sep 30, 2017 3:25 pm
Replies: 28
by Angelo Cannata » Thu Sep 14, 2017 11:36 am
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28 Replies

11553 Views

Last post by Angelo Cannata
Sat Sep 30, 2017 3:25 pm
Foundations of Mathematics.

Last post by Eodnhoj7 « Fri Sep 22, 2017 11:43 pm
Replies: 21
by A_Seagull » Fri Mar 25, 2016 3:14 am
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21 Replies

8180 Views

Last post by Eodnhoj7
Fri Sep 22, 2017 11:43 pm
If...Then as element of a superset

Last post by ProfAlexHartdegen « Mon Sep 11, 2017 10:40 pm
Replies: 8
by ProfAlexHartdegen » Wed Aug 30, 2017 2:11 pm

8 Replies

4157 Views

Last post by ProfAlexHartdegen
Mon Sep 11, 2017 10:40 pm
need help understanding when a Proof is a Proof

Last post by ProfAlexHartdegen « Wed Aug 30, 2017 2:01 pm
Replies: 3
by ProfAlexHartdegen » Tue Aug 29, 2017 3:43 am

3 Replies

1511 Views

Last post by ProfAlexHartdegen
Wed Aug 30, 2017 2:01 pm
need clearer explanation of mathematical induction.

Last post by Averroes « Wed Aug 23, 2017 7:51 am
Replies: 11
by ProfAlexHartdegen » Sat Aug 19, 2017 5:05 am

11 Replies

4642 Views

Last post by Averroes
Wed Aug 23, 2017 7:51 am
help understanding Negation Introduction

Last post by ProfAlexHartdegen « Sun Aug 13, 2017 8:02 pm
Replies: 17
by ProfAlexHartdegen » Thu Aug 10, 2017 10:59 pm
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17 Replies

7551 Views

Last post by ProfAlexHartdegen
Sun Aug 13, 2017 8:02 pm
need help understanding truth functional entailment

Last post by ProfAlexHartdegen « Thu Aug 10, 2017 10:27 pm
Replies: 2
by ProfAlexHartdegen » Mon Jul 31, 2017 5:48 pm

2 Replies

2624 Views

Last post by ProfAlexHartdegen
Thu Aug 10, 2017 10:27 pm
What 3.5 dimensions means to me

Last post by wtf « Mon Aug 07, 2017 4:34 am
Replies: 1
by Philosophy Explorer » Sat Aug 05, 2017 11:18 am

1 Replies

1213 Views

Last post by wtf
Mon Aug 07, 2017 4:34 am
Predicate logic

Last post by Wyman « Thu Jul 27, 2017 10:57 pm
Replies: 9
by Wyman » Mon Jul 24, 2017 2:25 am

9 Replies

4855 Views

Last post by Wyman
Thu Jul 27, 2017 10:57 pm
How to construct a formal proof?

Last post by Impenitent « Thu Jul 27, 2017 5:22 pm
Replies: 10
by sadiadia » Mon May 02, 2016 3:39 pm

10 Replies

6337 Views

Last post by Impenitent
Thu Jul 27, 2017 5:22 pm
Magic square puzzle

Last post by Philosophy Explorer « Wed Jul 26, 2017 5:54 am
Replies: 2
by Philosophy Explorer » Tue Jul 25, 2017 7:31 am

2 Replies

1234 Views

Last post by Philosophy Explorer
Wed Jul 26, 2017 5:54 am
Patterns upon patterns

Last post by Averroes « Thu Jul 20, 2017 9:35 pm
Replies: 29
by Philosophy Explorer » Thu Jul 13, 2017 3:23 am
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29 Replies

10529 Views

Last post by Averroes
Thu Jul 20, 2017 9:35 pm
Rings

Last post by wtf « Thu Jul 20, 2017 5:28 am
Replies: 6
by Philosophy Explorer » Wed Jul 19, 2017 3:57 pm

6 Replies

2993 Views

Last post by wtf
Thu Jul 20, 2017 5:28 am
Syllogism problem

Last post by Londoner « Wed Jun 28, 2017 1:13 pm
Replies: 17
by Jantje7600 » Fri May 13, 2016 6:37 pm
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17 Replies

6942 Views

Last post by Londoner
Wed Jun 28, 2017 1:13 pm
petitio principii or begging the question

Last post by Skip « Mon Jun 19, 2017 9:29 pm
Replies: 26
by duszek » Wed Jun 07, 2017 5:44 pm
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26 Replies

12708 Views

Last post by Skip
Mon Jun 19, 2017 9:29 pm
text suggestions

Last post by osgart « Wed Jun 07, 2017 3:24 am
Replies: 12
by holden » Tue May 23, 2017 10:30 am

12 Replies

6261 Views

Last post by osgart
Wed Jun 07, 2017 3:24 am
Logic translation

Last post by void « Tue Jun 06, 2017 4:59 pm

by void » Tue Jun 06, 2017 4:59 pm

0 Replies

1046 Views

Last post by void
Tue Jun 06, 2017 4:59 pm
The True Riemann Triangle - 630 degrees, not 270 deg

Last post by wtf « Tue May 02, 2017 7:37 pm
Replies: 3
by Necromancer » Mon May 01, 2017 10:55 pm

3 Replies

2070 Views

Last post by wtf
Tue May 02, 2017 7:37 pm
Suggestion for a new Modality "S5m"

Last post by Necromancer « Fri Apr 14, 2017 2:04 am

by Necromancer » Fri Apr 14, 2017 2:04 am

0 Replies

1533 Views

Last post by Necromancer
Fri Apr 14, 2017 2:04 am
Understanding soundness/completeness as "validity classification"?

Last post by wtf « Sat Apr 08, 2017 1:00 am
Replies: 2
by brendan.hill » Thu Mar 09, 2017 5:33 am

2 Replies

1900 Views

Last post by wtf
Sat Apr 08, 2017 1:00 am
Factorial pattern

Last post by thedoc « Thu Apr 06, 2017 11:25 pm
Replies: 13
by Philosophy Explorer » Wed Apr 05, 2017 3:08 pm

13 Replies

5638 Views

Last post by thedoc
Thu Apr 06, 2017 11:25 pm
question

Last post by thedoc « Mon Apr 03, 2017 4:23 am
Replies: 39
by thedoc » Fri Mar 31, 2017 6:18 pm
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39 Replies

10006 Views

Last post by thedoc
Mon Apr 03, 2017 4:23 am
Does the center of a disk exist?

Last post by Justintruth « Sat Jan 14, 2017 3:39 pm
Replies: 22
by Philosophy Explorer » Mon Sep 07, 2015 10:16 pm
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22 Replies

7574 Views

Last post by Justintruth
Sat Jan 14, 2017 3:39 pm
Simple if all As are Bs question..

Last post by vegetariantaxidermy « Tue Dec 20, 2016 8:43 am
Replies: 9
by mrfatman » Sun Dec 18, 2016 12:06 am

9 Replies

10608 Views

Last post by vegetariantaxidermy
Tue Dec 20, 2016 8:43 am
Game Theory

Last post by Justintruth « Thu Nov 24, 2016 1:24 am
Replies: 33
by duszek » Wed May 11, 2016 1:07 pm
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33 Replies

9803 Views

Last post by Justintruth
Thu Nov 24, 2016 1:24 am
Logical Proofs, Need help desperately!

Last post by Arising_uk « Sun Nov 13, 2016 3:41 pm
Replies: 6
by CollinOG » Wed Nov 09, 2016 5:46 pm

6 Replies

2448 Views

Last post by Arising_uk
Sun Nov 13, 2016 3:41 pm
What is the most uninteresting number?

Last post by Philosophy Explorer « Sat Nov 05, 2016 11:31 am
Replies: 53
by Philosophy Explorer » Fri Nov 27, 2015 11:54 pm
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53 Replies

13491 Views

Last post by Philosophy Explorer
Sat Nov 05, 2016 11:31 am
Do numbers need to be compared with one another to understand them better?

Last post by osgart « Sat Oct 22, 2016 12:23 am
Replies: 4
by Philosophy Explorer » Sun Feb 21, 2016 11:11 pm

4 Replies

2006 Views

Last post by osgart
Sat Oct 22, 2016 12:23 am
Was math invented or discovered?

Last post by Scott Mayers « Fri Oct 21, 2016 8:54 pm
Replies: 77
by Philosophy Explorer » Tue Dec 15, 2015 9:31 am
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77 Replies

21780 Views

Last post by Scott Mayers
Fri Oct 21, 2016 8:54 pm
To understand maths

Last post by osgart « Wed Oct 19, 2016 3:22 am
Replies: 41
by Ed Dirac » Wed Jul 06, 2016 6:14 pm
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41 Replies

11278 Views

Last post by osgart
Wed Oct 19, 2016 3:22 am
What are the achievements of logic?

Last post by osgart « Wed Oct 19, 2016 1:31 am
Replies: 38
by A_Seagull » Sun Oct 09, 2016 10:09 pm
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38 Replies

10240 Views

Last post by osgart
Wed Oct 19, 2016 1:31 am
Statements are true or false?

Last post by osgart « Wed Oct 19, 2016 12:09 am
Replies: 33
by A_Seagull » Thu Sep 22, 2016 6:05 am
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33 Replies

10930 Views

Last post by osgart
Wed Oct 19, 2016 12:09 am
The easiest hard problem (partition)

Last post by duszek « Mon May 16, 2016 8:25 pm
Replies: 5
by duszek » Mon May 16, 2016 3:58 pm

5 Replies

2058 Views

Last post by duszek
Mon May 16, 2016 8:25 pm
y = 1^n where n approaches infinity can be anything

Last post by Philosophy Explorer « Fri Mar 25, 2016 3:04 am
Replies: 18
by Philosophy Explorer » Mon Mar 21, 2016 11:01 am
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18 Replies

4371 Views

Last post by Philosophy Explorer
Fri Mar 25, 2016 3:04 am
Zero divided by Zero equals 0 & 1 & ∞

Last post by Dalek Prime « Thu Mar 03, 2016 5:28 pm
Replies: 116
by Jaded Sage » Wed Oct 28, 2015 12:54 am
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116 Replies

37195 Views

Last post by Dalek Prime
Thu Mar 03, 2016 5:28 pm
Is Pareto's Principle valid?

Last post by Philosophy Explorer « Sun Feb 28, 2016 11:48 pm

by Philosophy Explorer » Sun Feb 28, 2016 11:48 pm

0 Replies

1199 Views

Last post by Philosophy Explorer
Sun Feb 28, 2016 11:48 pm
The Axiom Of Identity *Challenged*

Last post by Dalek Prime « Thu Feb 18, 2016 6:39 am
Replies: 232
by Moyo » Sun Jun 28, 2015 11:44 am
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232 Replies

53697 Views

Last post by Dalek Prime
Thu Feb 18, 2016 6:39 am
Would you accept a math proof by computer?

Last post by Philosophy Explorer « Tue Dec 15, 2015 8:27 am

by Philosophy Explorer » Tue Dec 15, 2015 8:27 am

0 Replies

1880 Views

Last post by Philosophy Explorer
Tue Dec 15, 2015 8:27 am
The scams of Statistics...

Last post by Scott Mayers « Sat Dec 05, 2015 3:01 pm
Replies: 268
by Scott Mayers » Sun Aug 23, 2015 12:56 pm
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268 Replies

63669 Views

Last post by Scott Mayers
Sat Dec 05, 2015 3:01 pm
What does math mean to you?

Last post by wtf « Thu Dec 03, 2015 5:57 pm
Replies: 3
by Philosophy Explorer » Thu Dec 03, 2015 2:13 am

3 Replies

1928 Views

Last post by wtf
Thu Dec 03, 2015 5:57 pm
Is math as real as infinity...and vice-versa?

Last post by Arising_uk « Sun Nov 29, 2015 1:03 am
Replies: 1
by Philosophy Explorer » Sat Nov 28, 2015 11:28 pm

1 Replies

1173 Views

Last post by Arising_uk
Sun Nov 29, 2015 1:03 am
The implications of Maxwell's equations

Last post by Philosophy Explorer « Sun Nov 22, 2015 9:38 pm

by Philosophy Explorer » Sun Nov 22, 2015 9:38 pm

0 Replies

2206 Views

Last post by Philosophy Explorer
Sun Nov 22, 2015 9:38 pm
Making divergent series convergent

Last post by Philosophy Explorer « Sat Nov 21, 2015 6:35 am

by Philosophy Explorer » Sat Nov 21, 2015 6:35 am

0 Replies

1913 Views

Last post by Philosophy Explorer
Sat Nov 21, 2015 6:35 am
Einstein and his right triangle proof

Last post by Philosophy Explorer « Thu Nov 19, 2015 6:06 pm

by Philosophy Explorer » Thu Nov 19, 2015 6:06 pm

0 Replies

1775 Views

Last post by Philosophy Explorer
Thu Nov 19, 2015 6:06 pm
When you've lost your marbles.

Last post by Jaded Sage « Thu Nov 19, 2015 11:17 am

by Jaded Sage » Thu Nov 19, 2015 11:17 am

0 Replies

1785 Views

Last post by Jaded Sage
Thu Nov 19, 2015 11:17 am
Topology breakthrough

Last post by Philosophy Explorer « Thu Nov 12, 2015 7:57 pm

by Philosophy Explorer » Thu Nov 12, 2015 7:57 pm

0 Replies

1536 Views

Last post by Philosophy Explorer
Thu Nov 12, 2015 7:57 pm
Diagonal prime numbers

Last post by Glenn Westmore « Wed Nov 11, 2015 10:09 pm
Replies: 16
by Philosophy Explorer » Fri Oct 24, 2014 6:43 pm
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16 Replies

7095 Views

Last post by Glenn Westmore
Wed Nov 11, 2015 10:09 pm
Irrational numbers digits density

Last post by Scott Mayers « Mon Oct 26, 2015 7:09 pm
Replies: 10
by Philosophy Explorer » Wed Oct 29, 2014 10:42 pm

10 Replies

4117 Views

Last post by Scott Mayers
Mon Oct 26, 2015 7:09 pm
After Reimann

Last post by Moyo « Wed Oct 21, 2015 7:08 pm
Replies: 49
by Moyo » Thu Oct 15, 2015 1:35 am
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49 Replies

12902 Views

Last post by Moyo
Wed Oct 21, 2015 7:08 pm
Are there any limits to quantum algorithms?

Last post by wtf « Wed Oct 21, 2015 5:38 pm
Replies: 1
by Philosophy Explorer » Wed Oct 14, 2015 1:48 pm

1 Replies

1261 Views

Last post by wtf
Wed Oct 21, 2015 5:38 pm

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