Re: How do I get Mathematica to Simplify this to 1?

*To*: mathgroup at smc.vnet.net*Subject*: [mg104483] Re: How do I get Mathematica to Simplify this to 1?*From*: dushan <dushanm at spinn.net>*Date*: Sun, 1 Nov 2009 17:54:20 -0500 (EST)*References*: <hcgpkt$egn$1@smc.vnet.net> <hcjiv0$jmu$1@smc.vnet.net>

Thank you all for the replies. The central point seems to be that Norm ignores the previously stated Assumptions, and Simplify has to re-introduce them. Strange. Peter, thank you for the starter palette, which I'll extend. It'll come in especially handy to decipher David's and DrMajorBob's comments :) - Dushan On Nov 1, 2:04 am, Peter Breitfeld <ph... at t-online.de> wrote: > dushan wrote: > <snip> >> A separate question: Is there available somewhere a short list of >> symbols (such as '!!', '&&', "=.", '/@', etc.) and their meanings? A >> Mathematica book index would generally start with such a list, but >> having it available as a 1-page crib-sheet would be very helpful to >> newbies like me. > > May be this little palette is a starter: > > CreatePalette[{ > Grid[{ > {" f @ x", "f[x]"}, > {" x // f", "f[x]"}, > {" x ~ f ~ y", "f[x, y]"}, > {" f /@ x", "Map[f, x]"}, > {" f //@ x", "MapAll[f, x]"}, > {" f @@ x", "Apply[f, x]"}, > {" f @@@ x", "Apply[f, x, {1}]"}, > {" a && b", "And[a, b]"}, > {" a \[And] b", "And[a, b]"}, > {" a || b", "Or[a, b]"}, > {" a \[Or] b", "Or[a, b]"}, > {" ! a", "Not[a]"}, > {" \[Not] a", "Not[a]"}, > {" a \[Union] b", "Union[a, b]"}, > {" a \[Intersection] b", "Intersection[a, b]"}, > {" a <> b", "StringJoin[a, b]"}, > {" a /. b", "ReplaceAll[a, b]"}, > {" a //. b", "ReplaceRepeated[a, b] "}, > {" a /; b", "Condition[a ,b]"}, > {" a /: x=y", "TagSet[a, x, y]"}, > {" a /: x:=y", "TagSetDelayed[a, x, y] "} > }, > Alignment -> Left, > BaseStyle -> {FontFamily -> "Palatino", FontSize -> 12= }, > Dividers -> {False, {4 -> Black, 6 -> Black, 8 -> Black, > 14 -> Black, 16 -> Black, 17 -> Black, 19 -> Black, > 20 -> Black}} > ] > }]