From: Paul Libbrecht <paul@activemath.org>

Date: Mon, 2 Nov 2009 17:21:38 +0100

Cc: "'mozer'" <xmlizer@gmail.com>, "'www-math@w3.org'" <www-math@w3.org>

Message-Id: <B22EE909-41F4-452B-8790-ACEA39BBBE1E@activemath.org>

To: J.Fine <J.Fine@open.ac.uk>

Received on Monday, 2 November 2009 20:45:14 UTC

Date: Mon, 2 Nov 2009 17:21:38 +0100

Cc: "'mozer'" <xmlizer@gmail.com>, "'www-math@w3.org'" <www-math@w3.org>

Message-Id: <B22EE909-41F4-452B-8790-ACEA39BBBE1E@activemath.org>

To: J.Fine <J.Fine@open.ac.uk>

Do you mean in Content-MathML? (in presentation MathML it is trivial). This is a known limitation for both OpenMath and MathML and has been such since everyone tells you that this is semantically equivalent to A<B and B=C and C<D. I guess this is exactly what we should use to introduce such "chained operators symbol" but no-one has done it yet. paul Le 02-nov.-09 à 11:21, J.Fine a écrit : > It is common for mathematicians to write > A < B = C < D > for complicated expressions A, B, C, D. > > So this seems to be something lacking in MathML (and present in > Python).

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