  Let k be a perfect field of characteristic p>0, let A_d be the coordinate
ring of the coordinate axes in affine d-space over k, and let I_d be the ideal
defining the origin. We evaluate the relative K-groups K_q(A_d,I_d) in terms of
p-typical Witt vectors of k. When d=2 the result is due to Hesselholt, and for
K_2 it is due to Dennis and Krusemeyer. We also compute the groups K_q(A_d,I_d)
in the case where k is an ind-smooth algebra over the rationals, the result
being expressed in terms of algebraic de Rham forms. When k is a field of
characteristic zero this calculation is due to Geller, Reid and Weibel.
