4 ms·
From what I can tell, they are NOT universal or existential quantifiers, as those symbols are also used in the post. I think they are https://en.wikipedia.org/
by link_108 8y ago
From what I can tell, they are NOT universal or existential quantifiers, as those symbols are also used in the post. I think they are
https://en.wikipedia.org/wiki/Coproduct https://en.wikipedia.org/wiki/Coproduct
https://en.wikipedia.org/wiki/Product_(mathematics) https://en.wikipedia.org/wiki/Product_(mathematics)
- feanaro 8y agoThis is correct. The idea is that you can conjunctively (using the product) or disjunctively (using the coproduct) quantify the variables over the formulas that use them, essentially getting a conjunction/disjuction of the formula, instantiated with each of the concrete values of the variable quantified over.