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  2. Order of operations - Wikipedia

    en.wikipedia.org/wiki/Order_of_operations

    If exponentiation is indicated by stacked symbols using superscript notation, the usual rule is to work from the top down: [2] [7] a b c = a (b c), which typically is not equal to (a b) c. This convention is useful because there is a property of exponentiation that (a b) c = a bc, so it's unnecessary to use serial exponentiation for this.

  3. Collatz conjecture - Wikipedia

    en.wikipedia.org/wiki/Collatz_conjecture

    If one considers only the odd numbers in the sequence generated by the Collatz process, then each odd number is on average ⁠ 3 / 4 ⁠ of the previous one. [16] (More precisely, the geometric mean of the ratios of outcomes is ⁠ 3 / 4 ⁠.) This yields a heuristic argument that every Hailstone sequence should decrease in the long run ...

  4. List of rules of inference - Wikipedia

    en.wikipedia.org/wiki/List_of_rules_of_inference

    The column-11 operator (IF/THEN), shows Modus ponens rule: when p→q=T and p=T only one line of the truth table (the first) satisfies these two conditions. On this line, q is also true. Therefore, whenever p → q is true and p is true, q must also be true.

  5. Mathematical proof - Wikipedia

    en.wikipedia.org/wiki/Mathematical_proof

    The definition of a formal proof is intended to capture the concept of proofs as written in the practice of mathematics. The soundness of this definition amounts to the belief that a published proof can, in principle, be converted into a formal proof. However, outside the field of automated proof assistants, this is

  6. The NBA's one-and-done rule could be ending just in time for ...

    www.aol.com/sports/nbas-one-done-rule-could...

    NBA scouts are paying extra attention to some promising 15-year-old prospects who could become draft eligible soon if the league ends the one-and-done rule.

  7. Direct proof - Wikipedia

    en.wikipedia.org/wiki/Direct_proof

    Traditionally, a proof is a platform which convinces someone beyond reasonable doubt that a statement is mathematically true. Naturally, one would assume that the best way to prove the truth of something like this (B) would be to draw up a comparison with something old (A) that has already been proven as true. Thus was created the concept of ...

  8. Glossary of calculus - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_calculus

    The chain rule is a formula for computing the derivative of the composition of two or more functions. That is, if f and g are functions, then the chain rule expresses the derivative of their composition f ∘ g (the function which maps x to f(g(x)) ) in terms of the derivatives of f and g and the product of functions as follows:

  9. One-and-done rule changes: What NBA, NBPA disagree on - AOL

    www.aol.com/news/nba-nbpa-reportedly-odds-one...

    The NBA is using age limit negotiations with the NBPA to push for separate rule changes concerning the release of players' medical information to teams. One-and-done rule changes: What NBA, NBPA ...