It surprises me as much as anyone, but the price of eschewing LaTeX seems to be to wind up learning a smattering of HTML ... and of PS (!). Or so I must infer from the nature of the talk I'm giving either to geometers or to mathematical pedagogues at the upcoming ICM -- entitled "A piecewise cubic PostScript trefoil", it offers a piecewise polynomial parametrization of the trefoil knot -- a continuously differentiable stitching together of six rotated and reflected copies of one basic pattern-curve arising as part of the graph of a well-chosen cubic polynomial that any basic linear algebra student can come up with. The cute trick is that you don't need any fluency in linear algebra technique at all -- PostScript will do it all for you -- solve your problem, plot your cubic curve, and rotate and reflect it, as much as is required. For a five-sheet comix-spread PDF (caution: 2+ MB) of the talk slides, grab http://fej.math.wes.tlvp.net/ICM-2014/SeoulSlideComics.pdf . And enjoy, with a nice, cool, mint julep :-) . -- Fred [For admin and other information see: http://www.mta.ca/~cat-dist/ ]