/sci/ - Science & Math » Thread #12466226

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Anonymous Tue 15 Dec 00:50:24 2020 No.12466226 View Reply Original Report

Quoted By: >>12466229 >>12466251 >>12466278 >>12466339 >>12468394

What is the truth value of empty sentence?
Is it both true and false?

Anonymous

Anonymous Tue 15 Dec 2020 00:51:31 No.12466229 Report

Quoted By:

>>12466226
Could be Null.

Anonymous

Anonymous Tue 15 Dec 2020 01:01:11 No.12466251 Report

Quoted By:

>>12466226
In sequent calculus, it means false (a contradiction)

Anonymous

Anonymous Tue 15 Dec 2020 01:07:37 No.12466278 Report

Quoted By: >>12466323

>>12466226
not a well-formed formula, so there is no truth value

Anonymous

Anonymous Tue 15 Dec 2020 01:22:11 No.12466323 Report

Quoted By: >>12466566

>>12466278
an empty sequence of symbols is still a sequence

Anonymous

Anonymous Tue 15 Dec 2020 01:26:13 No.12466339 Report

Quoted By: >>12466391

Anonymous

Anonymous Tue 15 Dec 2020 01:39:09 No.12466391 Report

Quoted By:

>>12466339
vacuous truth is implication sentence, so it is not empty

Anonymous

Anonymous Tue 15 Dec 2020 02:45:41 No.12466566 Report

Quoted By:

>>12466323
not all sequences of symbols are well-formed formulas

Anonymous

Anonymous Tue 15 Dec 2020 15:18:53 No.12468394 Report

Quoted By:

>>12466226
Is it an empty disjunction or an empty conjunction? The empty disjunction is false and the empty conjunction is true

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