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There is an unexpected inefficiency when I calculate matrix product by Dot. The only relevant part of my code is presented as follows: ClearAll[timeEvol]; timeEvol[hamil_, initS_List, ti_?NumericQ … , 1, Length@base[[1]]}]; ind = Range[Length@base]; (*calculate the tag and sort it*) unsortT = Map[(Dot[p, #]) &, base]; unsortT = Thread[List[unsortT, ind]]; SortBy[unsortT, First] ]; (*Generate …
asked Jun 20 '15 by AchillesJJ