| 1. | A conclude about ratio test of positive series
关于正项级数比值判别法的一个推广 |
| 2. | On the speed of convergence and divergence of positive progressions
对正项级数敛散快慢的讨论 |
| 3. | A new study of a positive item
对一个正项级数命题的再探讨 |
| 4. | Strong and weak comparison on positive progression judgment convergence algorithm
正项级数判敛法的强弱比较 |
| 5. | Study on the peaks linked to the crystalline of l - la with variable temperature ftir spectra method
正项级数的一个新的判敛法 |
| 6. | Series of positive terms
正项级数 |
| 7. | Positive term series
正项级数 |
| 8. | Theorem 1 ( bounded sum test ) a series of nonnegative terms converges if and only if it ' s partial sums are bounded above
定理1正项级数收敛的充分必要条件是：它的部分和数列有上界。 |
| 9. | Theorem 1 ( bounded sum test ) a series of nonnegative terms converges if and only if it ' s partial sums are bounded above
定理2 (比较审敛法)设和都是正项级数，且。若级数收敛，则级数收敛；反之，若级数发散，则级数发散。 |
| 10. | This paper deals with the work of the 19th century mathematicians on the criteria for the convergence and divergence of the infinite series , which are seldom mentioned in our calculus textbooks
摘要对19世纪上半叶欧洲数学家在正项级数敛散性判别方面的工作作了考察和分析。 |
