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MathGroup Archive 2002

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RE: A symbol for Floor

  • To: mathgroup at smc.vnet.net
  • Subject: [mg36548] RE: [mg36525] A symbol for Floor
  • From: "Wolf, Hartmut" <Hartmut.Wolf at t-systems.com>
  • Date: Wed, 11 Sep 2002 13:27:29 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

>-----Original Message-----
>From: Jack Goldberg [mailto:jackgold at umich.edu]
To: mathgroup at smc.vnet.net
>Sent: Wednesday, September 11, 2002 9:28 AM
>Subject: [mg36548] [mg36525] A symbol for Floor
>
>
>Hi Group!
>
>A commonly used symbol for the Floor function is a square 
>bracket with the
>upper indents removed.  Is this symbol part of Mathematica's 
>built-in symbols?  I
>think not, so then, can it be constructed "by hand".
>
>Jack
>
>

Jack, 

yes it is already built-in! Bring up the palette with menu: File > Palettes
> CompleteCharachters; there is a section Operators > General, where you'll
find what you want.

Alternatively type 'esc' l f 'esc' <your expression> 'esc' r f 'esc', or
instead of the esc-sequence use the corresponding mark-ups. For output try
TraditionalForm. If you don't like that for all of your output, you may just
add a formatting rule for Floor:

In[7]:= Unprotect[Floor]
In[8]:=
Floor /: MakeBoxes[Floor[expr_], StandardForm] := 
   RowBox[{"\[LeftFloor]", MakeBoxes[expr, StandardForm], "\[RightFloor]"}]

In[9]:= Protect[Floor]

In[11]:= Floor /@ (\[Pi] + \[Lambda])
Out[11]= 3 + \[LeftFloor]\[Lambda]\[RightFloor]

Same thing with Ceiling, BTW.

--
Hartmut



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