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DTSTART:19700329T010000
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UID:1210
SUMMARY:Pure Mathematics Seminar: Peter Jorgensen
DESCRIPTION:Please note the change of time.\n\nSL_2-tilings and triangulations of the strip\n\nSL_2-tilings were introduced by Assem, Reutenauer, and Smith in connection with frieses and their applications to cluster algebras.\n\nAn SL_2-tiling is a bi-infinite matrix of positive integers such that each adjacent 2 × 2-submatrix has determinant 1.\n\nWe construct a large class of new SL_2-tilings which contains the previously known ones. More precisely, we show that there is a bijection between our class of SL_2-tilings and certain combinatorial objects, namely triangulations of the strip.
DTSTART:20131016T160000
DTEND:20131016T170000
LOCATION:A54, Postgraduate Statistics Centre Lecture Theatre
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