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2. Pythagorean triple - Wikipedia

   en.wikipedia.org/wiki/Pythagorean_triple

   Animation demonstrating the smallest Pythagorean triple, 3 2 + 4 2 = 5 2. A Pythagorean triple consists of three positive integers a, b, and c, such that a 2 + b 2 = c 2. Such a triple is commonly written (a, b, c), a well-known example is (3, 4, 5). If (a, b, c) is a Pythagorean triple, then so is (ka, kb, kc) for any positive integer k.

3. Prime triplet - Wikipedia

   en.wikipedia.org/wiki/Prime_triplet

   In particular, the sets must have the form (p, p + 2, p + 6) or (p, p + 4, p + 6). [1] With the exceptions of (2, 3, 5) and (3, 5, 7) , this is the closest possible grouping of three prime numbers, since one of every three sequential odd numbers is a multiple of three, and hence not prime (except for 3 itself).

4. Sexy prime - Wikipedia

   en.wikipedia.org/wiki/Sexy_prime

   For example, the numbers 5 and 11 are a pair of sexy primes, because both are prime and =. The term "sexy prime" is a pun stemming from the Latin word for six: sex . If p + 2 or p + 4 (where p is the lower prime) is also prime, then the sexy prime is part of a prime triplet .

5. Tree of primitive Pythagorean triples - Wikipedia

   en.wikipedia.org/wiki/Tree_of_primitive...

   [6]: p.7 For example, parent (3, 4, 5) has excircle radii equal to 2, 3 and 6. These are precisely the inradii of the three children (5, 12, 13), (15, 8, 17) and (21, 20, 29) respectively. If either of A or C is applied repeatedly from any Pythagorean triple used as an initial condition, then the dynamics of any of a , b , and c can be ...

6. Formulas for generating Pythagorean triples - Wikipedia

   en.wikipedia.org/wiki/Formulas_for_generating...

   Michael Stifel published the following method in 1544. [3] [4] Consider the sequence of mixed numbers,,,, … with = + +.To calculate a Pythagorean triple, take any term of this sequence and convert it to an improper fraction (for mixed number , the corresponding improper fraction is ).

7. Triplets graduate university on same day with first-class honours

   www.aol.com/triplets-graduate-university-same...

   A set of triplets believed to be the first to graduate all together at the same university with first-class honours have said the moment was “bittersweet” after the loss of their father.