I'm learning prolog, and I'm confused by the claim that prolog uses proof by contradiction: The resolution proof process makes use of a technique ...
I'm learning prolog, and I'm confused by the claim that prolog uses proof by contradiction: The resolution proof process makes use of a technique ...
apowAddition verifies when I comment out containsInverses(g) in my definition of a valid group theory algebra, but when I uncomment it fails to verify ...
I want to write a proof about my function but since it's only export not public export, how can I do that? Afaik public makes the implementation pu ...
I am a beginner in lean prover and I have struggled a bit with the following example: I need to proof the following ∃ x, f x Where f is a func ...
When I write: I get error: Meanwhile when I write: Everything is fine. Why? Updated: I used Data.Nat and natDiv for some reason fundamental ...
How to give formal proofs by hand? Is there a language specification, as formal as formal logic, that we can build our proof on? For example, how do ...
I am self-studying TAOCP and trying to make sense of the solution to the following problem from Chapter 2.2.2 Linear Lists: Sequential Allocation. ...
How would one prove that K is the range of inputs? How would it be the same as the maximum element? Using geeksforgeeks as an reference where it said ...
I'm trying to write a proof in the Isabelle "structured style" and I'm not sure how to specify the value of existential variables. Specifically, I'm t ...
Consider the statement: The last digit of n^5 is equal to the last digit of n. This is equivalent to saying n^ 5 mod 10 = n mod 1 . The proof for this ...
I am currently trying to use quarto beamer to making lecture slides. I would like to use the theorem environment in beamer, the qmd file however canno ...
Dafny has the option to set {:induction false}. Also, as far as I know, whenever we use assertions in Dafny, what happens below it that it constructs ...
The two definitions are these: The theorem that I'm trying to prove is this: The perm -> equiv direction is ready, but the equiv -> perm ...
Unable to come up with a formal proof of optimality for algorithm A for the given problem. Have convinced myself that it is possible to execute some o ...
I am trying to verify a code that uses simple modulo operation in a while loop to insert the digits of a number into an array. I recieve a number, an ...
Came upon the need for a proof for when I use my any statement. Need to rewrite non-standardized product names from free-text fields. The need/use ...
I have a definition involving match, similar like this: I try to proof something similar like this: But when I unfold the definition of five, I ...
I need to prove this sorting algorithm using Dafny: I tried to do the following asserts, and the assert after the swap is problematic (Error: asser ...
after working for a whole day on this with no success, I might get some help here. I implemented a splitString function in Coq: It takes a String (In ...
I've seen several proofs for Floyd's algorithm in several posts inside and outside stack overflow. All of them proves the second part of the algorithm ...