# Publications

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Author Title Type [ Year] "Four functors formalism",

*Unpublished*, pp. 1–20, March, 1999.One of the most important ideas of the four functor formalism was the proof that a projective morphism is lower transversal (satisfies a generalized analog of the proper base change theorem). Unfortunately no complete proof remained but all of the main ideas are contained in these notes:
1998-11-13-notes.pdf
1998-11-21-notes.pdf
2002-01-08-notes.pdf

(77.92 KB)"The free n-category generated by a cube, oriented matroids and higher Bruhat orders",

*Funktsional. Anal. i Prilozhen.*, vol. 25, pp. 62–65, 1991. (235.89 KB)"Flags and Grothendieck Cartographical Group in Higher Dimensions",

*CSTARCI Math. Preprints*, 1990. (583.06 KB)