Thanks to Phil Clayton for pointing out that the the Unicode code point
2A04 N-ARY UNION OPERATOR WITH PLUS that was being used
for the Z bag union operator is really intended for a distributed union
operation. The code point 228E MULTISET UNION is a more logical
choice for binary bag union. I have updated the web page that
describes the mapping here:
http://www.lemma-one.com/ProofPower/unicode/pp-unicode.html
<http://www.lemma-one.com/ProofPower/unicode/pp-unicode.html>
and also updated the ProofPower and pputf8 source in the github
source repos:
https://www.github.com/RobArthan/pp
<https://www.github.com/RobArthan/pp>
https://www.github.com/RobArthan/pp-contrib
<https://www.github.com/RobArthan/pp-contrib>
The correction will appear in the next release.
Regards,
Rob.
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