Hmm. Just some rough though= ts. For representing "logic" the most basic/fundamental concept is th= e law of identity pe'i. So what about something like:
X=3DX
Or some such. Maybe some symbol other than "X" if a different symbol would = look better?

On Nov 19, 2011 4:25 PM, "John E Clifford" <<= a href=3D"mailto:kali9putra@yahoo.com">kali9putra@yahoo.com> wrote:

E=3Dmc^2 has naught to do with Logic, of course, nor does the sequ= ence of prime numbers (well, a little), so that point got lost. The e= arliest Lojban logo used intersecting circles (from Venn diagrams) and a do= ubled headed arrow (from one standard presentation of propositional calculu= s). But, of course, those are known only to people who have some acqu= aintance (however slight) to modern logic (since 1858 or so). Nothing unive= rsal springs to mind, since Logic, in this sense, at least, is an almost co= mpletely Euro-American phenomenon. There is a markedly different trad= ition in India (which might be symbolized with something picturing smoke on= a mountain revealing fire). The early (and quickly quelled) Chinese = tradition doesn't lend itself easily to depiction (how do you draw a white horse not being a horse -- nor white?). The Islamic tradition = transmitted and tidied up the Greek version to the West, which had received= only a very dubious recension directly. So, as I said, this is a Wes= tern tradition and maybe we just have to face that an use Western logos -- = not that I can think of one that really works for non-logicians.

From: M. Nael <= muhammad.nael@gmail.com>
To: lojban@googlegroups.com
Sent: Sat, November 19, 2011 3:02:25 PM
Subject: Re: [lojban] New lo= go; a work in progress

As I said, it's a work in progress that needs opinions. So= , here's the first question:

I symbolized logic using the 'E=3Dmc^2' equation and a short sequence = of prime numbers. But that doesn't seem to work. Like symbolizing language = by the shape of some talking people, how do you symbolize logic in a c= ulturally neutral way? And how do you symbolize the offspring; the Loj= ban language itself?

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