1. The result, now known as Abel summable to the same sum. 2. Unlike the above series, is not Ces�ro summable nor Abel summable. 3. Unlike the above series, is not Ces�ro summable nor Abel summable . 4. A classic example of a \ theta-summable Fredholm module arises as follows. 5. For example, in three dimensions the autocorrelation of a square-summable discrete signal would be 6. If it exists and say that the family " a " is unconditionally summable . 7. Since, the original series is said to be summable ( approach to divergent series ). 8. It follows, essentially from the Cauchy Schwarz inequality, that f " is absolutely summable . 9. An integral is ( C, 0 ) summable precisely when it exists as an improper integral. 10. Whenever a series is Ces�ro summable , it is also Abel summable and has the same sum.