?? not sure what i mean by this, but ... ?? vague sense in which schubert variety coming form "composite" kaleidoscope group element can be thought of as arising by sort of "convolution" .... ???? ....

?? relationship to "convolution" description of hecke operators and/or their composition described for example by vaughan jones .... ????? .....


"hecke operator with truth value coefficients" ... ??? ....