Newton-Okounkov bodies of Bott-Samelson varieties and Grossberg-Karshon twisted cubes
Newton-Okounkov bodies of Bott-Samelson varieties and Grossberg-Karshon twisted cubes
We describe, under certain conditions, the Newton-Okounkov body of a Bott-Samelson variety as a lattice polytope defined by an explicit list of inequalities.The valuation that we use to define the Newton-Okounkov body is different from that used previously in the literature.The polytope that arises is a special case of the …