Is there any logical system/method where impossible/illogical/inconsistent things can exist (like a solution to Russell's paradox that makes sense)?
4700
Can paraconsistent or other logics make the impossible happen?
47926
What is the logical form of the definition of validity?
35771
How can I solve this quantum mechanical "paradox"?
93447
How is Russell’s Paradox equal to the universal set?
59964
Why an inconsistent formal system can prove everything?
72357
Can one infer independence by simple reasoning/intuition?
63963
deductive system where the axioms are all the propositions that are not tautology
155679
If union of two theories is not consistent one of them implies a sentence which the other implies opposite of it
97187
In what formal system is Godel's Incompleteness Theorem (or similar statements of undecidability) proven?
148237
Is ¬¬(¬¬P → P) provable in intuitionistic logic?
12449
How to formulate continuum hypothesis without the axiom of choice?
68607
Could an argument with false Premises and a true Conclusion be logically valid?
65895
Irrationality proofs not by contradiction
116135
A paradox related to computable reals?
137961
Will Determinism be ever possible?
119888
Is it possible to convert $\forall$ quantifiers to $\exists$ quantifiers without negation?
56325
If we accept a false statement, can we prove anything?