Show that the convergence by rows of a double series does not imply convergence by columns, but if the sum by rows, columns and reciangles all exist, then all three must be equal. Show also that the result may not be true if the convergence by rectangles is not assumed.

College Algebra
1st Edition
ISBN:9781938168383
Author:Jay Abramson
Publisher:Jay Abramson
Chapter9: Sequences, Probability And Counting Theory
Section9.4: Series And Their Notations
Problem 10TI: Determine whether the sum of the infinite series is defined. 24+(12)+6+(3)+
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Show that the convergence by rows of a double series does
not imply convergence by columns, but if the sum by rows, columns and
reciangles all exist, then all three must be equal. Show also that the result
may not be true if the convergence by rectangles is not assumed.
Transcribed Image Text:Show that the convergence by rows of a double series does not imply convergence by columns, but if the sum by rows, columns and reciangles all exist, then all three must be equal. Show also that the result may not be true if the convergence by rectangles is not assumed.
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