2002, Volume 2, Number 4

This issue — as well as two preceding ones — is dedicated to Yuri I. Manin on the occasion of his 65^th birthday.

	An analytic separation of series of representations for ${\rm SL}(2;\mathbb R)$ S. G. Gindikin		635–645
	Complexity of semialgebraic proofs D. Yu. Grigor'ev, E. A. Hirsch, D. V. Pasechnik		647–679
	Unramified reciprocal polynomials and Coxeter decompositions B. H. Gross		681–692
	Good and bad uses of elliptic curves in cryptography N. I. Koblitz		693–715
	Isomonodromy equations on algebraic curves, canonical transformations and Whitham equations I. M. Krichever		717–752
	Generalized Harish-Chandra modules I. B. Penkov, V. V. Serganova		753–767
	Vestigia investiganda M. Wodzicki		769–798