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In the Boole Library in Ireland (which has entrances on different floors) they use an algebraic (affine) system. There is a floor designated "Q" and then other
by Y_Y 2y ago
In the Boole Library in Ireland (which has entrances on different floors) they use an algebraic (affine) system. There is a floor designated "Q" and then other floors are labelled relatively, "Q+2", "Q-1", etc.