Index talk:DeSitterGravitation.djvu

Typography
There is a bit of a nightmare here. If you look on Page:DeSitterGravitation.djvu/6 you will see "Denoting the coordinates of simultaneous events by non-italic letters", these letters being plain upright Roman. Further down at "Denoting now the simultaneous relative coordinates by letters of another type" our author introduces a different italic font, less cursive than the normal one and slightly bolder (also I think that in "denoting the distance between simultaneous positions by r" the r is the same font as these). There is no obvious way of setting these latter in wiki math. The original proofer has made these bold font $$\mathbf{xyz}$$ and (perhaps for better distinction) made the "non-italic letters" san-serif $$\mathsf{xyz}$$ instead of Roman $$\mathrm{xyz}$$. I was working on making the "non-italic letters" Roman $$\mathrm{xyz}$$ and "the letters of another type" bold italic $$\boldsymbol{xyz}$$, but with some qualms as these are not easy to distinguish from ordinary math (italic) $$xyz$$. And then another validator did some pages leaving them as originally proofed, so now the final document will be inconsistent. Does anybody have any thoughts on this? Also the capitals in the math are all upright Roman $$\mathrm{ABC}$$ but the proofer has left them in default math style as italic $$ABC$$, should these be changed to Roman as I had started to do?--Keith Edkins (talk) 09:54, 20 March 2017 (UTC)
 * Thanks for your efforts. As far as I know, the currently installed Tex-Fonts do not allow the combination of all three styles bold, italic and Roman, so I think you are right by using $$\boldsymbol{xyz}$$. I also agree that the capitals should be changed to $$\mathrm{ABC}$$. --D.H (talk) 12:13, 20 March 2017 (UTC)