steps required to represent the knot as a polygon in the cubic lattice. Several lower bounds for the lattice step numbers of different knots have been obtained by computer simulations but the exact value of the lattice step number seems to be ...
My weekly reader -- History; Children's periodicals, American -- History
Charles Palmer Davis, visiting a one-room school in New England at the turn of the century, asked the pupils, "Who is the President of the United States?" Of the twenty-five first to fifth graders, only two knew the answer, one of whom was Davis's...
