Re: Equals, Less, Greater, etc; Confused by this simple output.

*To*: mathgroup at smc.vnet.net*Subject*: [mg109859] Re: Equals, Less, Greater, etc; Confused by this simple output.*From*: <ingolf.dahl at telia.com>*Date*: Wed, 19 May 2010 20:16:52 -0400 (EDT)

Try with these, and you will see that there is some sense in the Mathematica output: With[{a = "a little string"}, {a == a, a <= a, a >= a, a < a, a > a}] With[{a = 1 + I}, {a == a, a <= a, a >= a, a < a, a > a}] With[{a = {5, 2}}, {a == a, a <= a, a >= a, a < a, a > a}] With[{a = (# &)}, {a == a, a <= a, a >= a, a < a, a > a}] Best regards Ingolf Dahl ingolf.dahl at telia.com -----Original Message----- From: telefunkenvf14 [mailto:rgorka at gmail.com] Sent: den 19 maj 2010 13:03 To: mathgroup at smc.vnet.net Subject: [mg109859] [mg109825] Equals, Less, Greater, etc; Confused by this simple output. Can someone offer an explanation for the following output?---I'm trying to understand why it makes sense for Mathematica to be set up to respond like this. (Of course, feel free to point out any glaringly obvious math examples.) In[1]:= {a == a, a <= a, a >= a, a < a, a > a} Out[1]= {True, a <= a, a >= a, a < a, a > a} I would have thought that a <= a and a >= a would both evaluate to True, given that a == a does. Also, can something really be greater than itself? Hmmm... maybe there's hope for me after all. :) -RG