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**To**:*math-font-discuss@cogs.susx.ac.uk***Subject**:**Re: patch for bigdoc.tex, fontchart.sty****From**:*Ulrik Vieth <vieth@thphy.uni-duesseldorf.de>***Date**: Thu, 27 Nov 1997 15:36:23 +0100

> Speaking about the mathematica fonts, looking at the result of > testdoc.tex with the mathematica layout, I noticed that the accents > are all wrong, since they live at the baseline, not the x-height, > in the mathematica fonts. I fixed this by raising all accents to > the x-height in the vf. I don't have the patch here though. Yes, I know. This is another case of built-in expectations about how fonts are designed. I avoided this problem in mmaptm by taking most of the accents (except for vector) from Times Roman instead of MMa. > Another small thing which went wrong in the last release is the > order of the new delimiters. There's another problem with Euler extension layout. The integrals and big ops (\sum, \prod, \coprod) should come from euex, not cmex. > One more thing: Some days ago I saw a request for a mirrored \iota > on de.comp.text.tex. The requester was quoting W.V.O.Quine with the > statement that this symbol is used `since Peano' for the `the'-functor > (i.e. the functor turning a formula \varphi(x) into a term denoting > the unique element fulfilling that formula: \inviota x\varphi(x) is > `the' x satisfying \varphi). Since I am working in mathematical logic > myself, I can confirm the statement. I think \inviota would be a more > useful addition the the `greek half' of MC than the exotic greek numerals > or \varbeta, which have been removed in the latest release (by Ulriks > reorganization of MC/MSP/MS1). If wanted, I can dig up references for > the actual use of \inviota in the literature. I suppose this \inviota would have a similar role as the \backepsilon (`such that') and would exist only in one shape if available at all? > So what do you think ? If it is a well-established notation, why not? I have no idea how many users there are in the specific field of mathematical logic, but I suppose the use of \eth and \thorn for some special kinds of differentials in quantum field theory is equally rare. (Although the latter could, if necessary, always be taken from a T1 font.) Cheers, Ulrik.

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