# Questions tagged [truth-conditional-semantics]

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### Can a function have a set as its value? [closed]

In relation to his possible worlds analysis of natural language conditionals (e.g. 1975 Indicative Conditionals) Robert Stalnaker posited a function which takes an antecedent proposition and a ...
1 vote
117 views

### Do Gödel's incompleteness theorems and Tarski's theorem of indefinability of truth show we can never discover and prove every truth?

I thought I had a grasp on this. Do GΓΆdel's apply to just math; logic, too; or more, and what does its applicability entail? If it applies to math, does it apply to physics? Similarly with Tarski: can ...
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45 views

### How would demi-conditionals work?

Let π = an actuality operator and ββ be demi-if. Which, if any, of the following conversions would go through? πA ββ πB = βπA β βπB πA ββ πB = βπA β πB πA ββ πB = πA β βπB πA ββ πB = βοΏ½...
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84 views

### I think I finally understand alethic nihilism

So the definition of truth is that p is true if and only if p. However, since the Liar Paradox states that p is true if and only if p is false, this is a contradiction. So the words truth and falsity ...
• 301
1 vote
67 views

### How Does Alethic Nihlism Address The "Changing Of Subject" Objection?

I recently read this article in my pursuit to understand wtf alethic nihlism is trying to say: https://philarchive.org/archive/ASASIT One of the objections to alethic nihlism is that alethic nihlism ...
• 301
83 views

### Trivialism vs Alethic Nihlism

What are the similiarities and differences between the two theories (as well as arguments for and counterarguments against). From what I know, trivialism states that everything is true (and I believe ...
• 301
268 views

### What's so special about Tarski's T-Schema?

It seems fairly obvious. Even a five year old could probably come up with it. Its obvious that if something is the case, it is true (literally synonyms). So, am I missing something? Is there a gulf ...
• 301
166 views

### How can alethic nihilism be justified?

I read the article βOn the Advantages of Believing that Nothing is Trueβ. I just don't understand how someone can believe something is the case, but is not true. It's like saying you believe unmarried ...
• 301
80 views

### ββ (or generally βM, for whatever modal operator(s) M)

I tried Googling "demi-possibility demi-negation" and got nothing (just "demi-possibility" gave results mostly related to demisexuality). And my analysis of demi-negation didn't ...
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1k views

### How is Truth Different From Reality?

Is the whole question like "what is truth" just about finding definitions to things we know but can't put into words to explain (things that are currently ineffable). For example, everyone ...
• 301
255 views

### What is Alethic Nihilism?

I recently came across this reddit post: https://www.reddit.com/r/askphilosophy/comments/15chen5/comment/jtwnkkw/ I think it has something to do with denying the truth predicate without denying the ...
• 301
78 views

### Questions Regarding Tarski's Semantical Formalization of the Colloquial Usage of Truth

My question is in regard to a problem (albeit a simple one) that I ran into reading Tarski's paper "Concept of Truth in Formalized Languages". On page 159 Tarski states: (5) for all p, βp' ...
• 695
130 views

### What are the arguments of philosophers against the reasoning which justifies the horseshoe from truth-functionality?

There is a reasoning in mathematical logic which is meant to prove that the horseshoe is the only logical operation which fits our notion of conditional. The reasoning starts from the idea that the ...
• 8,089
481 views

### Book request: A nosology of untruths

I recall reading several philosophical articles which deal with various types of untruths: lies, misrepresentations, contradictions, omissions, confabulations, delusions, hallucinations, apparitions, ...
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160 views

### The limits on formal semantics: compositionality, context and truth values

I am a little bit surprised by the principle of composionality in semantics (I'm very new to all of this), which states that the meaning of a complex expression is determined by the meanings of its ...
• 113
61 views

### Is this a legitimate way to reframe structuralism in the philosophy of mathematics?

As an umbrella term, "structuralism" has to cover realist and nonrealist versions, while also carrying through the theme of its name nontrivially (for there is a trivial way to make ...
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49 views

### When does a conditional statement hold true according to Dialetheists?

I understand that for the consequent to really follow from the antecedent, it (the consequent) must be both relevant and necessary given the antecedent. So my question is: which types of conditional ...
• 69
65 views

### Semantic consequence and Sound Argument

Is that correct to say that semantic consequence is equivalent to the concept of sound argument in classical propositional logic? If it is the case, arguments or theories with contradictory premises ...
244 views

### Lewis's truth condition for counterfactuals

According to SEP, Lewis's theory of counterfactual conditionals defines truth for counterfactuals as follows: [...] the truth condition for the counterfactual βIf A were (or had been) the case, C ...
1 vote
82 views

### Truth value for objects that are not included in definitions

Consider the statement "This triangle has radius 3" and the statement "This cat is a chihuahua". Both radius and chihuahua are terms defined for different kind of objects than the objects we are ...
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