Title: Virtual unknotting numbers of certain virtual torus knots,
Abstract: The virtual unknotting number of a virtual knot is the minimal number of
crossing changes that makes the virtual knot to be the unknot, which is defined
only for virtual knots virtually homotopic to the unknot. We focus on the
virtual knot obtained from the standard (p,q)-torus knot diagram by replacing
all crossings on one overstrand into virtual crossings and prove that its
virtual unknotting number is equal to the unknotting number of the
$(p,q)$-torus knot, i.e. it is (p-1)(q-1)/2.