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A property of weird numbers is that if n is weird, and p is a prime greater than the sum of divisors σ(n), then pn is also weird. [4] This leads to the definition of primitive weird numbers: weird numbers that are not a multiple of other weird numbers (sequence A002975 in the OEIS). Among the 1765 weird numbers less than one million, there are ...
In the Zork series of games, the Great Underground Empire has its own system of measurements, the most frequently referenced of which is the bloit. Defined as the distance the king's favorite pet can run in one hour (spoofing a popular legend about the history of the foot), the length of the bloit varies dramatically, but the one canonical conversion to real-world units puts it at ...
2. Denotes that a number is positive and is read as plus. Redundant, but sometimes used for emphasizing that a number is positive, specially when other numbers in the context are or may be negative; for example, +2. 3. Sometimes used instead of for a disjoint union of sets. − 1.
An infinite number of monkeys typing on an infinite number of typewriters will (almost surely) produce all possible written texts. Interesting number paradox: Either all natural numbers are interesting or else none of them are. Kruskal's tree theorem: TREE(1) = 1; TREE(2) = 3; TREE(3) = ...wait, where did all my disk space go? Legendre's constant
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left field * a notional source of unexpected or illogical questions, ideas, etc. ("that proposal came out of left field") [585] Defined by the Merriam-Webster online American dictionary as having American baseball-related origins [586] (the) Lower 48 used mainly by Alaskans, this is a colloquialism for the 48 Contiguous United States.
[18] [100] This accounts for the various rotation periods reported, such as 8.10 hours (±0.42 hours [20] or ±0.02 hours [19]) by Bannister et al. and Bolin et al. with a lightcurve amplitude of 1.5–2.1 magnitudes, [19] whereas Meech et al. reported a rotation period of 7.3 hours and a lightcurve amplitude of 2.5 magnitudes.
Strange quarks are found in subatomic particles called hadrons. Examples of hadrons containing strange quarks include kaons (K), strange D mesons (D s), Sigma baryons (Σ), and other strange particles. According to the IUPAP, the symbol s is the official name, while "strange" is to be considered only as a mnemonic. [2]