On the coincidences of Pascal lines - Jaydeep Chipalkatti We show that ψ has two irreducible components: a five-dimensional component of sextuples in involution, and a four-dimensional component of what will be called `ricochet configurations'. This gives a complete synthetic characterization of points in ψ. The proof relies upon Gröbner basis techniques to solve multivariate polynomial equations; the implementation was done in two distinct computer algebra systems. ✪ ✪ ✪ ✪ ✪ Hidden Content: **Hidden Content: Content of this hidden block can only be seen by members of (usergroups: V.I.P Downloader).** Theo LTTK Education
