3 research outputs found
Π ΡΠ²Π½ΠΎΠΌΡΡΠ½ΠΈΠΉ ΠΏΡΠ΄ΡΠΈΠ»Π΅Π½ΠΈΠΉ Π·Π°ΠΊΠΎΠ½ Π²Π΅Π»ΠΈΠΊΠΈΡ ΡΠΈΡΠ΅Π» Π±Π΅Π· ΠΏΡΠΈΠΏΡΡΠ΅Π½Ρ ΡΡΠΎΡΠΎΠ²Π½ΠΎ ΠΊΠ»Π°ΡΡ ΠΌΠ½ΠΎΠΆΠΈΠ½
We study the sums of identically distributed random variables whose indices belong to certain sets of a given family A in R^d, d >= 1. We prove that sums over scaling sets S(kA) possess a kind of the uniform in A strong law of large numbers without any assumption on the class A in the case of pairwise independent random variables with finite mean. The well known theorem due to R. Bass and R. Pyke is a counterpart of our result proved under a certain extra metric assumption on the boundaries of the sets of A and with an additional assumption that the underlying random variables are mutually independent. These assumptions allow to obtain a slightly better result than in our case. As shown in the paper, the approach proposed here is optimal for a wide class of other normalization sequences satisfying the MartikainenβPetrov condition and other families A. In a number of examples we discuss the necessity of the BassβPyke conditions. We also provide a relationship between the uniform strong law of large numbers and the one for subsequences.Key words:Β sums of random variables, uniform in a family of sets limit results, strong law of large numbers.Pages of the article in the issue:Β 39 - 48Language of the article: UkrainianΠΠΈ Π²ΠΈΠ²ΡΠ°ΡΠΌΠΎ ΡΡΠΌΠΈ ΠΎΠ΄Π½Π°ΠΊΠΎΠ²ΠΎ ΡΠΎΠ·ΠΏΠΎΠ΄ΡΠ»Π΅Π½ΠΈΡ
Π²ΠΈΠΏΠ°Π΄ΠΊΠΎΠ²ΠΈΡ
Π²Π΅Π»ΠΈΡΠΈΠ½, ΡΠ½Π΄Π΅ΠΊΡΠΈ ΡΠΊΠΈΡ
Π½Π°Π»Π΅ΠΆΠ°ΡΡ ΠΌΠ½ΠΎΠΆΠΈΠ½Π°ΠΌ Π· ΠΏΠ΅Π²Π½ΠΎΡ ΡΡΠΌ'Ρ A Π² R^d, d>=1. ΠΠ»Ρ ΡΠ°ΠΊΠΈΡ
ΡΡΠΌ Π΄ΠΎΠ²Π΅Π΄Π΅Π½ΠΎ ΡΠ°ΠΊ Π·Π²Π°Π½Ρ ΡΡΠ²Π½ΠΎΠΌΡΡΠ½Ρ Ρ ΠΊΠ»Π°ΡΡ ΠΌΠ½ΠΎΠΆΠΈΠ½ ΡΠ΅ΠΎΡΠ΅ΠΌΡ ΠΏΡΠΎ ΠΏΡΠ΄ΡΠΈΠ»Π΅Π½ΠΈΠΉ Π·Π°ΠΊΠΎΠ½ Π²Π΅Π»ΠΈΠΊΠΈΡ
ΡΠΈΡΠ΅Π» Π±Π΅Π· ΠΆΠΎΠ΄Π½ΠΎΠ³ΠΎΠΎΠ±ΠΌΠ΅ΠΆΠ΅Π½Π½Ρ Π½Π° A Ρ Π²ΠΈΠΏΠ°Π΄ΠΊΡ ΠΏΠΎΠΏΠ°ΡΠ½ΠΎ Π½Π΅Π·Π°Π»Π΅ΠΆΠ½ΠΈΡ
Π²ΠΈΠΏΠ°Π΄ΠΊΠΎΠ²ΠΈΡ
Π²Π΅Π»ΠΈΡΠΈΠ½ Π·Ρ ΡΠΊΡΠ½ΡΠ΅Π½ΠΈΠΌ ΠΌΠ°ΡΠ΅ΠΌΠ°ΡΠΈΡΠ½ΠΈΠΌ ΡΠΏΠΎΠ΄ΡΠ²Π°Π½Π½ΡΠΌ. ΠΡΠ΄ΠΎΠΌΠ° ΡΠ΅ΠΎΡΠ΅ΠΌΠ° ΠΠ°ΡΡΠ°-ΠΠ°ΠΉΠΊΠ° Ρ Π°Π½Π°Π»ΠΎΠ³ΠΎΠΌ ΠΎΡΡΠΈΠΌΠ°Π½ΠΎΠ³ΠΎ ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΡ, Π² ΡΠΊΡΠΉ Π²ΠΈΠΊΠΎΡΠΈΡΡΠΎΠ²ΡΡΡΡΡΡ ΠΏΠ΅Π²Π½Π΅ Π΄ΠΎΠ΄Π°ΡΠΊΠΎΠ²Π΅ ΠΎΠ±ΠΌΠ΅ΠΆΠ΅Π½Π½Ρ Π½Π° Π³ΡΠ°Π½ΠΈΡΡ ΠΌΠ½ΠΎΠΆΠΈΠ½, Π° ΡΠ°ΠΊΠΎΠΆ ΠΏΡΠΈΠΏΡΡΠ΅Π½Π½Ρ ΠΏΡΠΎ Π½Π΅Π·Π°Π»Π΅ΠΆΠ½ΡΡΡΡ Ρ ΡΡΠΊΡΠΏΠ½ΠΎΡΡΡ Π²ΡΠ΄ΠΏΠΎΠ²ΡΠ΄Π½ΠΈΡ
Π²ΠΈΠΏΠ°Π΄ΠΊΠΎΠ²ΠΈΡ
Π²Π΅Π»ΠΈΡΠΈΠ½. ΠΠ° ΡΠ°Ρ
ΡΠ½ΠΎΠΊ ΡΠΈΡ
Π΄ΠΎΠ΄Π°ΡΠΊΠΎΠ²ΠΈΡ
ΠΏΡΠΈΠΏΡΡΠ΅Π½Ρ ΡΠ΅Π·ΡΠ»ΡΡΠ°Ρ ΠΠ°ΡΡΠ°-ΠΠ°ΠΉΠΊΠ° Ρ Π±ΡΠ»ΡΡ ΡΠΎΡΠ½ΠΈΠΌ, Π°Π»Π΅ ΡΠ΅Π·ΡΠ»ΡΡΠ°Ρ, ΠΎΡΡΠΈΠΌΠ°Π½ΠΈΠΉ Ρ ΡΡΠΉ ΡΠΎΠ±ΠΎΡΡ, ΡΠΏΡΠ°Π²Π΄ΠΆΡΡΡΡΡΡ Π΄Π»Ρ Π±ΡΠ»ΡΡ ΡΠΈΡΠΎΠΊΠΎΠΊΠΎΠ³ΠΎ ΠΊΠ»Π°ΡΡ Π²ΠΈΠΏΠ°Π΄ΠΊΠΎΠ²ΠΈΡ
Π²Π΅Π»ΠΈΡΠΈΠ½ ΡΠ° ΡΡΠΌ'Ρ A. Π ΡΠΎΠ±ΠΎΡΡ ΡΠ°ΠΊΠΎΠΆ ΠΏΠΎΠΊΠ°Π·Π°Π½ΠΎ, ΡΠΎ Π·Π°ΠΏΡΠΎΠΏΠΎΠ½ΠΎΠ²Π°Π½ΠΈΠΉ ΠΏΡΠ΄Ρ
ΡΠ΄ Ρ ΠΎΠΏΡΠΈΠΌΠ°Π»ΡΠ½ΠΈΠΌ Π΄Π»Ρ ΡΠ½ΡΠΈΡ
Π½ΠΎΡΠΌΡΠ²Π°Π½Ρ, ΡΠΊΡ Π·Π°Π΄ΠΎΠ²ΠΎΠ»ΡΠ½ΡΡΡΡ ΡΠΌΠΎΠ²Ρ ΠΠ°ΡΡΡΠΊΠ°ΠΉΠ½Π΅Π½Π°-ΠΠ΅ΡΡΠΎΠ²Π°. ΠΠΈ Π½Π°Π²ΠΎΠ΄ΠΈΠΌΠΎ ΡΠ°ΠΊΠΎΠΆ Π½ΠΈΠ·ΠΊΡ ΠΏΡΠΈΠΊΠ»Π°Π΄ΡΠ² ΡΠ° ΠΊΠΎΠ½ΡΡΠΏΡΠΈΠΊΠ»Π°Π΄ΡΠ², ΡΠΊΡ ΠΏΠΎΡΡΠ½ΡΡΡΡ ΡΡΡΡ ΡΠΌΠΎΠ²ΠΈ ΠΠ°ΡΡΠ°-ΠΠ°ΠΉΠΊΠ° ΡΡΠΎΡΠΎΠ²Π½ΠΎ ΡΡΠΌ'Ρ A. ΠΠ°Π²Π΅Π΄Π΅Π½ΠΎ Π·Π²'ΡΠ·ΠΎΠΊ ΠΎΡΡΠΈΠΌΠ°Π½ΠΎΠ³ΠΎ ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΡ ΡΠ° ΠΏΡΠ΄ΡΠΈΠ»Π΅Π½ΠΎΠ³ΠΎ Π·Π°ΠΊΠΎΠ½Ρ Π²Π΅Π»ΠΈΠΊΠΈΡ
ΡΠΈΡΠ΅Π» Π΄Π»Ρ ΠΏΡΠ΄ΠΏΠΎΡΠ»ΡΠ΄ΠΎΠ²Π½ΠΎΡΡΠ΅ΠΉ.
Uniform strong law of large numbers
We prove the strong law of large numbers for random signed measures. The result is uniform over a family of subsets under mild assumptions