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7 votes
5 answers
4k views

What is the difference between the "is" of predication and the "is" of identity?

4 votes
4 answers
155 views

Can a reason cost 5 dollars?

3 votes
4 answers
2k views

Is tautology for logic what theorems are for mathematics?

2 votes
4 answers
336 views

What is meant by "assume P"?

2 votes
1 answer
734 views

What is an example of a predictive conditional?

2 votes
7 answers
233 views

Can a theory that is now wrong be right in the future?

2 votes
3 answers
316 views

How to select between two competing theories?

2 votes
4 answers
191 views

Two positions at once is logically impossible

1 vote
7 answers
842 views

Same vs identical vs equal objects

1 vote
1 answer
132 views

How definition relates to abstract/concrete objects?

1 vote
2 answers
207 views

Contradiction vs Impossiblity

1 vote
4 answers
289 views

If-then statement and time between antecedent and consequent

1 vote
2 answers
76 views

Truth value for objects that are not included in definitions

1 vote
7 answers
306 views

Could nature have no "physical laws" at all?

1 vote
3 answers
120 views

Why law of identity is formulated in terms of "things" and not statements?

1 vote
3 answers
144 views

Are specific concepts of objects temporary

1 vote
2 answers
479 views

Analogy and hypothetical reasoning

1 vote
3 answers
359 views

Why a theory is still used after proven wrong?

1 vote
4 answers
752 views

Does truth exist without proof?

1 vote
1 answer
148 views

Do mathematical objects exist after their definition? [duplicate]

1 vote
4 answers
305 views

Statements about real world

1 vote
1 answer
99 views

Does the truth value of a material conditional depend on context?

1 vote
1 answer
111 views

Can we make statements for persons/objects that cease to exist?

0 votes
3 answers
251 views

Clarification of definitions of physical quantities

0 votes
0 answers
84 views

Are axioms more important than definitions?

0 votes
2 answers
185 views

Non-consistent mathematical axioms

0 votes
3 answers
163 views

How to contradict a general statement?

0 votes
2 answers
116 views

Do mathematicicans care about implications where the hypothesis is always false?

0 votes
3 answers
178 views

How Does One Define a Keyboard?

0 votes
2 answers
155 views

If-then statements meaning in everyday vs mathematics