Spelling of disc

Known as: Disc (spelling), Disk or disc, Spelling of 'disk'

Disc and disk are two variants of the English word for objects of a generally thin and cylindrical geometry. These variations are due to the way in…

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2013

1991

Let P_n={Z=(Z_1,…,Z_n)|Z_iZ_i~n1, Z_i are 2×2 complex matrices},H_n={W=(W_1,…, W_n)|W_i=Z_iB,(Z_1,…,Z_n)∈P_n,B∈SL(2,C)}, D_n={W…