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Pell's equation for n = 2 and six of its integer solutions. Pell's equation, also called the Pell–Fermat equation, is any Diophantine equation of the form =, where n is a given positive nonsquare integer, and integer solutions are sought for x and y.
Simplification is the process of replacing a mathematical expression by an equivalent one that is simpler (usually shorter), according to a well-founded ordering. Examples include:
Adam Ondra on the sport climbing route Silence, the hardest free climbing route in the world and the first-ever at 9c (French), 5.15d (American YDS), and XII+ (UIAA).. The two main free climbing grading systems (which include the two main free climbing disciplines of sport climbing and traditional climbing) are the "French numerical system" and the "American YDS system". [2]
2,4,5-Trimethoxyphenethylamine (2,4,5-TMPEA or TMPEA-2), also known as 2C-O or 2C-OMe, or is a phenethylamine of the 2C family and was first synthesized by Jansen in 1931. [1] It is a positional isomer of the drug mescaline (3,4,5-tri methoxy ).
Unlike many other phenethylamines, 2C drugs, including 2C-C, 2C-D, 2C-E, 2C-I, and 2C-T-2 among others, are inactive as monoamine releasing agents and reuptake inhibitors. [ 6 ] [ 11 ] [ 8 ] [ 7 ] [ 10 ] Most of the 2C drugs are agonists of the rat and mouse trace amine-associated receptor 1 (TAAR1).
This expression says that the output function f will be 1 for the minterms ,,,, and (denoted by the 'm' term) and that we don't care about the output for and combinations (denoted by the 'd' term). The summation symbol ∑ {\displaystyle \sum } denotes the logical sum (logical OR, or disjunction) of all the terms being summed over.
2C-G-1: 2C-G-2 CAS: 2888537-48-0 . The synthesis of this compound has not been reported, but it is described prophetically in WO2022271982 2C-G-2: 2C-G-3 CAS: 207740-19-0 . Dosage: 16–25 mg Duration: 12–24 hours Effects: Some visual effects. General euphoria with an underlying sense of paranoia. 2C-G-3: 2C-G-4 CAS: 952006-59-6 . Synthesized ...
2C-B (4-bromo-2,5-dimethoxyphenethylamine), also known as Nexus, is a synthetic psychedelic drug of the 2C family, mainly used as a recreational drug. [2] [1] [4] It was first synthesized by Alexander Shulgin in 1974 for use in psychotherapy.