▁ ▁equivalence ▁ ▁of ▁ ▁Mark ov ▁ch ains , ▁Journal ▁of ▁the ▁American ▁Mathemat ical ▁Society ▁ 6 ▁( 1 9 9 3 ), ▁ 1 3 1 - ▁ 1 4 7 ▁. ▁ ▁References ▁▁ ▁Category : L iving ▁people ▁Category : 2 1 st - century ▁American ▁mathemat icians ▁Category : 2 0 th - century ▁American ▁mathemat icians ▁Category : Can ad ian ▁mathemat icians ▁Category : F ell ows ▁of ▁the ▁American ▁Mathemat ical ▁Society ▁Category : Univers ity ▁of ▁California , ▁Ber keley ▁al umn i ▁Category : Univers ity ▁of ▁British ▁Columbia ▁fac ulty ▁Category : F ellow ▁M embers ▁of ▁the ▁IE EE <0x0A> </s> ▁Sil v io ▁D ' Am ico ▁( F ebru ary ▁ 3 , ▁ 1 8 8 7 ▁in ▁Rome ▁– ▁April ▁ 1 , ▁ 1 9 5 5 ▁in ▁Rome ) ▁was ▁an ▁Italian ▁theatre ▁critic , ▁journalist , ▁and ▁the or ist ▁of ▁Italian ▁the ater . ▁ ▁Not ▁a ▁F asc ist ▁himself , ▁D ' Am ico ▁was ▁the ▁major ▁the ater ▁critic ▁during ▁the ▁vent enn io , ▁the ▁twenty ▁years ▁ ▁( 1 9 2 2 - 1 9 4 5 ) ▁of ▁F asc ist ▁rule ▁in ▁Italy . ▁He ▁was ▁the ▁first ▁editor ▁of ▁the ▁nine ▁volume ▁Enc iclopedia ▁dello ▁Sp ett ac olo ▁( En cyc lopedia ▁of ▁Perform ing ▁Arts ), ▁published ▁between ▁ 1 9 5 4 ▁and ▁ 1 9 6 5 , ▁that ▁covered