97 research outputs found
ΠΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠ΅ Π°ΠΊΡΡΠ°Π»ΡΠ½ΡΡ ΠΏΡΠΎΠ±Π»Π΅ΠΌ ΡΠ΅ΠΎΡΠΈΠΈ ΡΠ»ΡΡΠ°ΠΉΠ½ΡΡ ΠΏΡΠΎΡΠ΅ΡΡΠΎΠ², ΠΌΠ°ΡΠ΅ΠΌΠ°ΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ Π°Π½Π°Π»ΠΈΠ·Π° ΠΈ ΠΊΡΠ°Π΅Π²ΡΡ Π·Π°Π΄Π°Ρ ΠΌΠ°ΡΠ΅ΠΌΠ°ΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΡΠΈΠ·ΠΈΠΊΠΈ
Π‘ΡΡΡ ΡΠΎΠ·ΡΠΎΠ±ΠΊΠΈ ΠΏΠΎΠ»ΡΠ³Π°Ρ Π²: 1) ΡΠ·Π°Π³Π°Π»ΡΠ½Π΅Π½Π½Ρ ΡΠ΅ΠΎΡΡΡ ΡΡΠ½ΠΊΡΡΠΉ Π· ΠΏΡΠ°Π²ΠΈΠ»ΡΠ½ΠΎΡ Π·ΠΌΡΠ½ΠΎΡ ΡΠ° ΠΏΠΎΠ΄Π°Π»ΡΡΠΎΠΌΡ ΡΠΎΠ·Π²ΠΈΡΠΊΡ ΡΠ΅ΠΎΡΡΡ ΠΏΡΠ΅Π²Π΄ΠΎΡΠ΅Π³ΡΠ»ΡΡΠ½ΠΈΡ
ΡΡΠ½ΠΊΡΡΠΉ; 2) ΡΠΎΠ·Π²ΠΈΡΠΊΡ ΡΠ΅ΠΎΡΡΡ ΡΡΠ½ΠΊΡΡΠΉ Π· Π½Π΅Π²ΠΈΡΠΎΠ΄ΠΆΠ΅Π½ΠΈΠΌΠΈ Π³ΡΡΠΏΠ°ΠΌΠΈ ΡΠ΅Π³ΡΠ»ΡΡΠ½ΠΈΡ
ΡΠΎΡΠΎΠΊ; 3) Π²ΠΈΠ²ΡΠ΅Π½Π½Ρ Π°ΡΠΈΠΌΠΏΡΠΎΡΠΈΡΠ½ΠΎΡ ΠΏΠΎΠ²Π΅Π΄ΡΠ½ΠΊΠΈ ΡΠΎΠ·Π²βΡΠ·ΠΊΡΠ² ΡΡΠΎΡ
Π°ΡΡΠΈΡΠ½ΠΈΡ
Π΄ΠΈΡΠ΅ΡΠ΅Π½ΡΡΠ°Π»ΡΠ½ΠΈΡ
ΡΡΠ²Π½ΡΠ½Ρ; 4) Π²ΠΈΠ²ΡΠ΅Π½Π½Ρ Π°ΡΠΈΠΌΠΏΡΠΎΡΠΈΡΠ½ΠΎΡ ΠΏΠΎΠ²Π΅Π΄ΡΠ½ΠΊΠΈ ΠΎΡΡΠ½ΠΎΠΊ ΡΡΠ½ΠΊΡΡΠΎΠ½Π°Π»ΡΠ½ΠΈΡ
ΠΏΠ°ΡΠ°ΠΌΠ΅ΡΡΡΠ² Π²ΠΈΠΏΠ°Π΄ΠΊΠΎΠ²ΠΈΡ
ΠΏΡΠΎΡΠ΅ΡΡΠ² ΡΠ° ΡΠΈΡΡΠ΅ΠΌ ΠΠΎΠ»ΡΡΠ΅ΡΡΠ°; 5) Π΄ΠΎΡΠ»ΡΠ΄ΠΆΠ΅Π½Π½Ρ ΡΠΎΠ·ΠΏΠΎΠ΄ΡΠ»ΡΠ² ΡΡΠ½ΠΊΡΡΠΎΠ½Π°Π»ΡΠ² Π²ΠΈΠΏΠ°Π΄ΠΊΠΎΠ²ΠΈΡ
ΠΏΡΠΎΡΠ΅ΡΡΠ² ΡΠ° ΠΏΠΎΠ»ΡΠ², Π·ΠΎΠΊΡΠ΅ΠΌΠ° Π³Π°ΡΡΡΡΠ²ΡΡΠΊΠΈΡ
; 6) ΠΏΠΎΠ±ΡΠ΄ΠΎΠ²Ρ Π½ΠΎΠ²ΠΈΡ
ΡΠ·Π°Π³Π°Π»ΡΠ½Π΅Π½Ρ Π³ΡΠΏΠ΅ΡΠ³Π΅ΠΎΠΌΠ΅ΡΡΠΈΡΠ½ΠΈΡ
ΡΡΠ½ΠΊΡΡΠΉ ΡΠ° Π΄ΠΎΡΠ»ΡΠ΄ΠΆΠ΅Π½Π½Ρ ΡΡ
Π²Π»Π°ΡΡΠΈΠ²ΠΎΡΡΠ΅ΠΉ; 7) ΠΏΠΎΠ±ΡΠ΄ΠΎΠ²Ρ Π½ΠΎΠ²ΠΈΡ
ΡΠΈΠΏΠΈ ΡΠ½ΡΠ΅Π³ΡΠ°Π»ΡΠ½ΠΈΡ
ΠΏΠ΅ΡΠ΅ΡΠ²ΠΎΡΠ΅Π½Ρ ΡΠ° ΡΠ½ΡΠ΅Π³ΡΠ°Π»ΡΠ½ΠΈΡ
ΡΡΠ²Π½ΡΠ½Ρ.
Π£Π·Π°Π³Π°Π»ΡΠ½Π΅Π½ΠΎ Π²ΡΠ΄ΠΎΠΌΡ ΡΠ΅ΠΎΡΠ΅ΠΌΡ ΠΠ°ΡΠ°ΠΌΠ°ΡΠΈ, ΠΏΡΠΎ Π°ΡΠΈΠΌΠΏΡΠΎΡΠΈΡΠ½Ρ ΠΏΠΎΠ²Π΅Π΄ΡΠ½ΠΊΡ ΡΠ½ΡΠ΅Π³ΡΠ°Π»ΡΠ² Π²ΡΠ΄ ΡΡΠ½ΠΊΡΡΠΉ Π· ΠΏΡΠ°Π²ΠΈΠ»ΡΠ½ΠΎΡ Π·ΠΌΡΠ½ΠΎΡ, Π½Π° ΡΠ½ΡΠ΅Π³ΡΠ°Π»ΠΈ Π²ΡΠ΄ ΡΡΠ½ΠΊΡΡΠΉ Π· Π½Π΅Π²ΠΈΡΠΎΠ΄ΠΆΠ΅Π½ΠΈΠΌΠΈΠΌ Π³ΡΡΠΏΠ°ΠΌΠΈ ΡΠ΅Π³ΡΠ»ΡΡΠ½ΠΈΡ
ΡΠΎΡΠΎΠΊ.
ΠΠΎΠ²Π΅Π΄Π΅Π½ΠΎ ΡΠ΅ΠΎΡΠ΅ΠΌΠΈ ΠΏΡΠΎ Π΄ΡΠ°Π»ΡΠ½ΡΡΡΡ Π°ΡΠΈΠΌΠΏΡΠΎΡΠΈΡΠ½ΠΎΡ ΠΏΠΎΠ²Π΅Π΄ΡΠ½ΠΊΠΈ ΡΠ°ΡΡΠΊΠΈ ΡΡΠ½ΠΊΡΡΠΉ ΡΠ° ΡΠ°ΡΡΠΊΠΈ ΡΠ·Π°Π³Π°Π»ΡΠ½Π΅Π½ΠΈΡ
ΠΎΠ±Π΅ΡΠ½Π΅Π½ΠΈΡ
ΡΡΠ½ΠΊΡΡΠΉ. Π¦Π΅ Π΄ΠΎΠ·Π²ΠΎΠ»ΠΈΠ»ΠΎ Π²ΡΡΠ°Π½ΠΎΠ²ΠΈΡΠΈ ΡΠΌΠΎΠ²ΠΈ Π½Π° ΠΊΠΎΠ΅ΡΡΡΡΡΠ½ΡΠΈ Π·ΡΡΠ²Ρ ΡΠ° Π΄ΠΈΡΡΠ·ΡΡ ΡΡΠΎΡ
Π°ΡΡΠΈΡΠ½ΠΈΡ
Π΄ΠΈΡΠ΅ΡΠ΅Π½ΡΡΠ°Π»ΡΠ½ΠΈΡ
ΡΡΠ²Π½ΡΠ½Ρ, Π·Π° ΡΠΊΠΈΡ
ΡΠΎΠ·Π²βΡΠ·ΠΊΠΈ ΡΠΈΡ
ΡΡΠ²Π½ΡΠ½Ρ Ρ Π°ΡΠΈΠΌΠΏΡΠΎΡΠΈΡΠ½ΠΎ Π΅ΠΊΠ²ΡΠ²Π°Π»Π΅Π½ΡΠ½ΠΈΠΌΠΈ Π· ΡΠΎΠ·Π²βΡΠ·ΠΊΠ°ΠΌΠΈ Π·Π²ΠΈΡΠ°ΠΉΠ½ΠΈΡ
Π΄ΠΈΡΠ΅ΡΠ΅Π½ΡΡΠ°Π»ΡΠ½ΠΈΡ
ΡΡΠ²Π½ΡΠ½Ρ.The aim of the project is: 1) Generalization of the theory of regularly varying functions and further development of the theory of pseudo-regular functions; 2) Development of the theory of functions with non-degenerated groups of regular points; 3) Study of asymptotic behavior of solutions of stochastic differential equations; 4) Study of asymptotic behavior of functional parameter estimates for stochastic processes and Volterra systems; 5) Study of distributions of functionals of stochastic processes and fields, particularly of Gaussian ones; 6) Construction of new generalizations of hypergeometric functions and study of their properties; 7) Construction of new types of integral transforms and integral equations.
The known Karamata theorem on asymptotic behavior of integrals of regular varying functions was generalized to the case of integrals of functions with non-degenerated groups of regular points.
The theorems on duality of asymptotic behavior of ratios of functions and that of ratios of their generalized inverses were proved. This allowed establishing the conditions upon drift and diffusion coefficients in stochastic differential equations, under which their solutions are equivalent to the solutions of corresponding ordinary differential equations.
Distributions of a wide class of functionals of Chentsov field were found. In particular, we found the exact formulas for the distributions of maxima along curvilinear paths together with corresponding asymtotics.
Some new generalizations of the hypergeometric function were introduced, their main properties were studied. Moreover, we gave some their applications in the special functions theory, in the theory of integral transforms, integral calculus, to boundary problems of mathematical physics and so on. We also established some new composition relationships for fractional integro-differential operators.
A stochastic approach for estimation of unknown impulse response functions in unstable Volterra systems with internal noises was considered. Using the theory of multidimensional singular integrals with cyclic kernels, we established new conditions of asymptotic normality of corresponding estimates and proved the convergence of functionals of these estimates.Π‘ΡΡΡ ΡΠ°Π·ΡΠ°Π±ΠΎΡΠΊΠΈ ΡΠΎΡΡΠΎΠΈΡ Π²: 1) ΠΎΠ±ΠΎΠ±ΡΠ΅Π½ΠΈΠΈ ΡΠ΅ΠΎΡΠΈΠΈ ΠΏΡΠ°Π²ΠΈΠ»ΡΠ½ΠΎ ΠΌΠ΅Π½ΡΡΡΠΈΡ
ΡΡ ΡΡΠ½ΠΊΡΠΈΠΉ ΠΈ Π΄Π°Π»ΡΠ½Π΅ΠΉΡΠ΅ΠΌ ΡΠ°Π·Π²ΠΈΡΠΈΠΈ ΡΠ΅ΠΎΡΠΈΠΈ ΠΏΡΠ΅Π²Π΄ΠΎΡΠ΅Π³ΡΠ»ΡΡΠ½ΡΡ
ΡΡΠ½ΠΊΡΠΈΠΉ; 2) ΡΠ°Π·Π²ΠΈΡΠΈΠΈ ΡΠ΅ΠΎΡΠΈΠΈ ΡΡΠ½ΠΊΡΠΈΠΉ Ρ Π½Π΅Π²ΡΡΠΎΠΆΠ΄Π΅Π½Π½ΡΠΌΠΈ Π³ΡΡΠΏΠΏΠ°ΠΌΠΈ ΡΠ΅Π³ΡΠ»ΡΡΠ½ΡΡ
ΡΠΎΡΠ΅ΠΊ; 3) ΠΈΠ·ΡΡΠ΅Π½ΠΈΠΈ Π°ΡΠΈΠΌΠΏΡΠΎΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΏΠΎΠ²Π΅Π΄Π΅Π½ΠΈΡ ΡΠ΅ΡΠ΅Π½ΠΈΠΉ ΡΡΠΎΡ
Π°ΡΡΠΈΡΠ΅ΡΠΊΠΈΡ
Π΄ΠΈΡΡΠ΅ΡΠ΅Π½ΡΠΈΠ°Π»ΡΠ½ΡΡ
ΡΡΠ°Π²Π½Π΅Π½ΠΈΠΉ; 4) ΠΈΠ·ΡΡΠ΅Π½ΠΈΠΈ Π°ΡΠΈΠΌΠΏΡΠΎΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΏΠΎΠ²Π΅Π΄Π΅Π½ΠΈΡ ΠΎΡΠ΅Π½ΠΎΠΊ ΡΡΠ½ΠΊΡΠΈΠΎΠ½Π°Π»ΡΠ½ΡΡ
ΠΏΠ°ΡΠ°ΠΌΠ΅ΡΡΠΎΠ² ΡΠ»ΡΡΠ°ΠΉΠ½ΡΡ
ΠΏΡΠΎΡΠ΅ΡΡΠΎΠ² ΠΈ ΡΠΈΡΡΠ΅ΠΌ ΠΠΎΠ»ΡΡΠ΅ΡΡΠ°; 5) ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠΈ ΡΠ°ΡΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΠΉ ΡΡΠ½ΠΊΡΠΈΠΎΠ½Π°Π»ΠΎΠ² ΡΠ»ΡΡΠ°ΠΉΠ½ΡΡ
ΠΏΡΠΎΡΠ΅ΡΡΠΎΠ² ΠΈ ΠΏΠΎΠ»Π΅ΠΉ, Π² ΡΠ°ΡΡΠ½ΠΎΡΡΠΈ Π³Π°ΡΡΡΠΎΠ²ΡΠΊΠΈΡ
; 6) ΠΏΠΎΡΡΡΠΎΠ΅Π½ΠΈΠΈ Π½ΠΎΠ²ΡΡ
ΠΎΠ±ΠΎΠ±ΡΠ΅Π½ΠΈΠΉ Π³ΠΈΠΏΠ΅ΡΠ³Π΅ΠΎΠΌΠ΅ΡΡΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΡΠ½ΠΊΡΠΈΠΉ ΠΈ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠΈ ΠΈΡ
ΡΠ²ΠΎΠΉΡΡΠ²; 7) ΠΏΠΎΡΡΡΠΎΠ΅Π½ΠΈΠΈ Π½ΠΎΠ²ΡΡ
ΡΠΈΠΏΠΎΠ² ΠΈΠ½ΡΠ΅Π³ΡΠ°Π»ΡΠ½ΡΡ
ΠΏΡΠ΅ΠΎΠ±ΡΠ°Π·ΠΎΠ²Π°Π½ΠΈΠΉ ΠΈ ΠΈΠ½ΡΠ΅Π³ΡΠ°Π»ΡΠ½ΡΡ
ΡΡΠ°Π²Π½Π΅Π½ΠΈΠΉ.
ΠΠ·Π²Π΅ΡΡΠ½Π°Ρ ΡΠ΅ΠΎΡΠ΅ΠΌΠ° ΠΠ°ΡΠ°ΠΌΠ°ΡΡ ΠΎΠ± Π°ΡΠΈΠΌΠΏΡΠΎΡΠΈΡΠ΅ΡΠΊΠΎΠΌ ΠΏΠΎΠ²Π΅Π΄Π΅Π½ΠΈΠΈ ΠΈΠ½ΡΠ΅Π³ΡΠ°Π»ΠΎΠ² ΠΎΡ ΠΏΡΠ°Π²ΠΈΠ»ΡΠ½ΠΎ ΠΌΠ΅Π½ΡΡΡΠΈΡ
ΡΡ ΡΡΠ½ΠΊΡΠΈΠΉ ΠΎΠ±ΠΎΠ±ΡΠ΅Π½Π° Π½Π° ΠΈΠ½ΡΠ΅Π³ΡΠ°Π»Ρ ΠΎΡ ΡΡΠ½ΠΊΡΠΈΠΉ Ρ Π½Π΅Π²ΡΡΠΎΠΆΠ΄Π΅Π½Π½ΡΠΌΠΈ Π³ΡΡΠΏΠΏΠ°ΠΌΠΈ ΡΠ΅Π³ΡΠ»ΡΡΠ½ΡΡ
ΡΠΎΡΠ΅ΠΊ.
ΠΠΎΠΊΠ°Π·Π°Π½Ρ ΡΠ΅ΠΎΡΠ΅ΠΌΡ ΠΎ Π΄ΡΠ°Π»ΡΠ½ΠΎΡΡΠΈ Π°ΡΠΈΠΌΠΏΡΠΎΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΏΠΎΠ²Π΅Π΄Π΅Π½ΠΈΡ ΡΠ°ΡΡΠ½ΠΎΠ³ΠΎ ΡΡΠ½ΠΊΡΠΈΠΉ ΠΈ ΡΠ°ΡΡΠ½ΠΎΠ³ΠΎ ΠΈΡ
ΠΎΠ±ΠΎΠ±ΡΠ΅Π½Π½ΡΡ
ΠΎΠ±ΡΠ°ΡΠ½ΡΡ
ΡΡΠ½ΠΊΡΠΈΠΉ. ΠΡΠΎ ΠΏΠΎΠ·Π²ΠΎΠ»ΠΈΠ»ΠΎ ΡΡΡΠ°Π½ΠΎΠ²ΠΈΡΡ ΡΡΠ»ΠΎΠ²ΠΈΡ Π½Π° ΠΊΠΎΡΡΡΠΈΡΠΈΠ΅Π½ΡΡ ΡΠ½ΠΎΡΠ° ΠΈ Π΄ΠΈΡΡΡΠ·ΠΈΠΈ ΡΡΠΎΡ
Π°ΡΡΠΈΡΠ΅ΡΠΊΠΈΡ
Π΄ΠΈΡΡΠ΅ΡΠ΅Π½ΡΠΈΠ°Π»ΡΠ½ΡΡ
ΡΡΠ°Π²Π½Π΅Π½ΠΈΠΉ, ΠΏΡΠΈ ΠΊΠΎΡΠΎΡΡΡ
ΡΠ΅ΡΠ΅Π½ΠΈΡ ΡΡΠΈΡ
ΡΡΠ°Π²Π½Π΅Π½ΠΈΠΉ Π°ΡΠΈΠΌΠΏΡΠΎΡΠΈΡΠ΅ΡΠΊΠΈ ΡΠΊΠ²ΠΈΠ²Π°Π»Π΅Π½ΡΠ½Ρ ΡΠ΅ΡΠ΅Π½ΠΈΡΠΌ ΠΎΠ±ΡΠΊΠ½ΠΎΠ²Π΅Π½Π½ΡΡ
Π΄ΠΈΡΡΠ΅ΡΠ΅Π½ΡΠΈΠ°Π»ΡΠ½ΡΡ
ΡΡΠ°Π²Π½Π΅Π½ΠΈΠΉ.
ΠΠ°ΠΉΠ΄Π΅Π½Ρ ΡΠ°ΡΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΡ ΡΠΈΡΠΎΠΊΠΎΠ³ΠΎ ΠΊΠ»Π°ΡΡΠ° ΡΡΠ½ΠΊΡΠΈΠΎΠ½Π°Π»ΠΎΠ² ΠΎΡ ΠΏΠΎΠ»Ρ Π§Π΅Π½ΡΠΎΠ²Π°. Π ΡΠ°ΡΡΠ½ΠΎΡΡΠΈ, Π½Π°ΠΉΠ΄Π΅Π½Ρ ΡΠΎΡΠ½ΡΠ΅ Π²ΡΡΠ°ΠΆΠ΅Π½ΠΈΡ Π΄Π»Ρ ΡΠ°ΡΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΡ ΠΌΠ°ΠΊΡΠΈΠΌΡΠΌΠ° ΠΏΠΎΠ»Ρ Π²Π΄ΠΎΠ»Ρ ΠΊΡΠΈΠ²ΠΎΠ»ΠΈΠ½Π΅ΠΉΠ½ΡΡ
ΠΏΡΡΠ΅ΠΉ; ΡΠ°ΠΊΠΆΠ΅ ΡΡΡΠ°Π½ΠΎΠ²Π»Π΅Π½Π° Π°ΡΠΈΠΌΠΏΡΠΎΡΠΈΠΊΠ° ΡΡΠΈΡ
ΡΠ°ΡΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΠΉ.
ΠΠ²Π΅Π΄Π΅Π½Ρ Π½ΠΎΠ²ΡΠ΅ ΠΎΠ±ΠΎΠ±ΡΠ΅Π½ΠΈΡ Π³ΠΈΠΏΠ΅ΡΠ³Π΅ΠΎΠΌΠ΅ΡΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΡΡΠ½ΠΊΡΠΈΠΈ, ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½Ρ ΠΈΡ
ΠΎΡΠ½ΠΎΠ²Π½ΡΠ΅ ΡΠ²ΠΎΠΉΡΡΠ²Π°, Π΄Π°Π½Ρ ΠΈΡ
ΠΏΡΠΈΠ»ΠΎΠΆΠ΅Π½ΠΈΡ Π² ΡΠ΅ΠΎΡΠΈΠΈ ΡΠΏΠ΅ΡΠΈΠ°Π»ΡΠ½ΡΡ
ΡΡΠ½ΠΊΡΠΈΠΉ, ΡΠ΅ΠΎΡΠΈΠΈ ΠΈΠ½ΡΠ΅Π³ΡΠ°Π»ΡΠ½ΡΡ
ΠΏΡΠ΅ΠΎΠ±ΡΠ°Π·ΠΎΠ²Π°Π½ΠΈΠΉ, ΠΈΠ½ΡΠ΅Π³ΡΠ°Π»ΡΠ½ΠΎΠΌ ΠΈΡΡΠΈΡΠ»Π΅Π½ΠΈΠΈ, Π° ΡΠ°ΠΊΠΆΠ΅ ΠΊ ΠΊΡΠ°Π΅Π²ΡΠΌ Π·Π°Π΄Π°ΡΠ°ΠΌ ΠΌΠ°ΡΠ΅ΠΌΠ°ΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΡΠΈΠ·ΠΈΠΊΠΈ ΠΈ Π΄Ρ. Π£ΡΡΠ°Π½ΠΎΠ²Π»Π΅Π½Ρ Π½ΠΎΠ²ΡΠ΅ ΠΊΠΎΠΌΠΏΠΎΠ·ΠΈΡΠΈΠΎΠ½Π½ΡΠ΅ ΡΠΎΠΎΡΠ½ΠΎΡΠ΅Π½ΠΈΡ Π΄Π»Ρ ΠΎΠΏΠ΅ΡΠ°ΡΠΎΡΠΎΠ² Π΄ΡΠΎΠ±Π½ΠΎΠ³ΠΎ ΠΈΠ½ΡΠ΅Π³ΡΠΎ-Π΄ΠΈΡΡΠ΅ΡΠ΅Π½ΡΠΈΡΠΎΠ²Π°Π½ΠΈΡ.
Π Π°ΡΡΠΌΠΎΡΡΠ΅Π½ ΡΡΠΎΡ
Π°ΡΡΠΈΡΠ΅ΡΠΊΠΈΠΉ ΠΏΠΎΠ΄Ρ
ΠΎΠ΄ ΠΊ Π·Π°Π΄Π°ΡΠ΅ ΠΎΡΠ΅Π½ΠΈΠ²Π°Π½ΠΈΡ Π½Π΅ΠΈΠ·Π²Π΅ΡΡΠ½ΠΎΠΉ ΠΈΠΌΠΏΡΠ»ΡΡΠ½ΠΎΠΉ ΡΡΠ½ΠΊΡΠΈΠΈ Π΄Π»Ρ Π½Π΅ΡΡΡΠΎΠΉΡΠΈΠ²ΡΡ
Π»ΠΈΠ½Π΅ΠΉΠ½ΡΡ
ΡΠΈΡΡΠ΅ΠΌ ΠΠΎΠ»ΡΡΠ΅ΡΡΠ° Ρ ΡΡΠ΅ΡΠΎΠΌ Π²Π½ΡΡΡΠ΅Π½Π½ΠΈΡ
ΡΡΠΌΠΎΠ² ΡΠΈΡΡΠ΅ΠΌΡ. ΠΡΠΈ ΠΏΠΎΠΌΠΎΡΠΈ ΡΠ΅ΠΎΡΠΈΠΈ ΠΌΠ½ΠΎΠ³ΠΎΠΌΠ΅ΡΠ½ΡΡ
ΡΠΈΠ½Π³ΡΠ»ΡΡΠ½ΡΡ
ΠΈΠ½ΡΠ΅Π³ΡΠ°Π»ΠΎΠ² Ρ ΡΠΈΠΊΠ»ΠΈΡΠ΅ΡΠΊΠΈΠΌΠΈ ΡΠ΄ΡΠ°ΠΌΠΈ ΡΡΡΠ°Π½ΠΎΠ²Π»Π΅Π½Ρ Π½ΠΎΠ²ΡΠ΅ ΡΡΠ»ΠΎΠ²ΠΈΡ Π°ΡΠΈΠΌΠΏΡΠΎΡΠΈΡΠ΅ΡΠΊΠΎΠΉ Π½ΠΎΡΠΌΠ°Π»ΡΠ½ΠΎΡΡΠΈ ΡΠΎΠΎΡΠ²Π΅ΡΡΡΠ²ΡΡΡΠΈΡ
ΠΎΡΠ΅Π½ΠΎΠΊ, Π° ΡΠ°ΠΊΠΆΠ΅ Π΄ΠΎΠΊΠ°Π·Π°Π½Π° ΡΡ
ΠΎΠ΄ΠΈΠΌΠΎΡΡΡ ΡΡΠ½ΠΊΡΠΈΠΎΠ½Π°Π»ΠΎΠ² ΠΎΡ ΠΎΡΠ΅Π½ΠΎΠΊ
Extremal Graph Theory and Dimension Theory for Partial Orders
This dissertation analyses several problems in extremal combinatorics.In Part I, we study the following problem proposed by Barrus, Ferrara, Vandenbussche, and Wenger. Given a graph H and an integer t, what is the minimum number of coloured edges in a t-edge-coloured graph G on n vertices such that G does not contain a rainbow copy of H, but adding a new edge to G in any colour creates a rainbow copy of H? We determine the growth rates of these numbers for almost all graphs H and all t e(H).In Part II, we study dimension theory for finite partial orders. In Chapter 1, we introduce and define the concepts we use in the succeeding chapters.In Chapter 2, we determine the dimension of the divisibility order on [n] up to a factor of (log log n).In Chapter 3, we answer a question of Kim, Martin, Masak, Shull, Smith, Uzzell, and Wang on the local bipartite covering numbers of difference graphs.In Chapter 4, we prove some bounds on the local dimension of any pair of layers of the Boolean lattice. In particular, we show that the local dimension of the first and middle layers is asymptotically n / log n.In Chapter 5, we introduce a new poset parameter called local t-dimension. We also discuss the fractional variants of this and other dimension-like parameters.All of Part I is joint work with Antnio Giro of the University of Cambridge and Kamil Popielarz of the University of Memphis.Chapter 2 of Part II is joint work with Victor Souza of IMPA (Instituto de Matemtica Pura e Aplicada, Rio de Janeiro).Chapter 3 of Part II is joint work with Antnio Giro
A Symbolical Approach to Negative Numbers
Recent Early Algebra research indicates that it is better to teach negative numbers symbolically, as uncompleted subtractions or βdifference pairsβ, an idea due to Hamilton, rather than abstractly as they are currently taught, since all the properties of negative numbers then follow from properties of the subtraction operation with which children are already familiar. Symbolical algebra peaked in the 19th Century, but was superseded by abstract algebra in the 20th Century, because Peacockβs permanence principle, which asserted that solutions obtained symbolically would actually be correct, remained unproven. The main aim of this paper is to provide this missing proof, in order to place difference pairs on a rigorous mathematical foundation, so that they may for the first time be the subject of modern classroom based research. The essential ingredient in this proof is a new physical model, called the banking model, a development of the hills and dales model used in schools in New Zealand, which besides improving upon current models in several respects, has the crucial advantage of being a true physical model, that is, the properties of negative numbers come from freely manipulating the model in the manner of a sandbox, not by following an abstract set of rules. Throughout this paper a close correspondence is drawn between negative numbers viewed as uncompleted subtractions and fractions viewed as uncompleted divisions, which suggests a practical notation for difference pairs as single numbers but whose digits are either positive or negative, the equivalent for integers of the decimal fraction notation for rationals. The banking model is the ideal tool for visualising such positive and negative digits, and examples are provided to show not only that this is a powerful notation for use at Secondary level, but also that it resolves some long-standing problems of the subtraction algorithm at Primary level
General regular variation, Popa groups and quantifier weakening
We introduce general regular variation, a theory of regular variation containing the existing Karamata, Bojanic-Karamata/de Haan and Beurling theories as special cases. The unifying theme is the Popa groups of our title viewed as locally compact abelian ordered topological groups, together with their Haar measure and Fourier theory. The power of this unified approach is shown by the simplification it brings to the whole area of quantifier weakening, so important in this field
Artin's primitive root conjecture -a survey -
This is an expanded version of a write-up of a talk given in the fall of 2000
in Oberwolfach. A large part of it is intended to be understandable by
non-number theorists with a mathematical background. The talk covered some of
the history, results and ideas connected with Artin's celebrated primitive root
conjecture dating from 1927. In the update several new results established
after 2000 are also discussed.Comment: 87 pages, 512 references, to appear in Integer
- β¦