Now we will focus on φ → (A → A). This can't be the result of introducing any of our axioms (why is left to the reader), so it must once again be a modus ponens.
To be clear, I'm not proving anything, I'm just showing my thought process for arriving at the proof.
The end result is still valid. I can show that it is the shortest valid proof, but I just wanted to show an example.
@orlp I've edited the offending sentence.
Anonymous
22:04
@Pavel Not well
Anonymous
@Downsheep a.b should be a property b that the object a has, not a representation of a. If you're casting to a different type, it should be a function/method.
As of ECMAScript 2015, Javascript has 33 reserved keywords, such as break, const and new, as well as 10 future reserved keywords, such as let and await.
Your task is to chain together the largest number of consecutive1 distinct reserved keywords2 while writing functional code3.
Consecutive r...
Knapsack Problem
Given a set of items, each with a weight and a value, determine the number of each item to include in a collection so that the total weight is less than or equal to a given limit and the total value is as large as possible.
Wikipedia for more information
For example you can be...