Grothendieck-Serre Conjecture I: Appendix

Abstract

We prove here some supplementary statements that appeared without proof in I. Panin, A. Stavrova, N. Vavilov, On Grothendieck--Serre's conjecture concerning principal $G$-bundles over reductive group schemes:I, arXiv:0905.1418

We prove some supplementary statements that appeared without proof in arXiv:0905.1418; 10 pages