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Group code. In coding theory, group codes are a type of code. Group codes consist of linear block codes which are subgroups of , where is a finite Abelian group . A systematic group code is a code over of order defined by homomorphisms which determine the parity check bits. The remaining bits are the information bits themselves.
Group 8 is a group (column) of chemical elements in the periodic table. It consists of iron (Fe), ruthenium (Ru), osmium (Os) and hassium (Hs). "Group 8" is the modern standard designation for this group, adopted by the IUPAC in 1990. It should not be confused with "group VIIIA" in the CAS system, which is group 18 (current IUPAC), the noble gases.
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A normal form for a free product of groups is a representation or choice of a reduced sequence for each element in the free product . Normal Form Theorem for Free Product of Groups. Consider the free product of two groups and . Then the following two equivalent statements hold. (1) If , where is a reduced sequence, then in.
In chemistry, "iron group" used to refer to iron and the next two elements in the periodic table, namely cobalt and nickel.These three comprised the "iron triad". They are the top elements of groups 8, 9, and 10 of the periodic table; or the top row of "group VIII" in the old (pre-1990) IUPAC system, or of "group VIIIB" in the CAS system.
History. The IOCCC was started by Landon Curt Noll and Larry Bassel in 1984 while employed at National Semiconductor's Genix porting group. The idea for the contest came after they compared notes with each other about some poorly written code that they had to fix, notably the Bourne shell, which used macros to emulate ALGOL 68 syntax, and a buggy version of finger for BSD.
Group 8. Group 8 may refer to: Group 8 (Sweden), a feminist movement in Sweden. Group 8 element, a series of elements in the Periodic Table. Group 8 Rugby League, a rugby league competition. G8, or Group of 8, an inter-governmental political forum from 1997 until 2014. NASA Astronaut Group 8, 1978. Group VIII, former nomenclature for the noble ...