What to do, when the sentence ends with an abbreviation. For example:
The following results are by Deb et al.
or
The following results are by Deb et al..
Are two consecutive dots ok?
What to do, when the sentence ends with an abbreviation. For example:
The following results are by Deb et al.
or
The following results are by Deb et al..
Are two consecutive dots ok?
No, sentences end with a single {period / end stop}. Look at a style manual (e.g., Chicago Manual of Style) for detailed rules on punctuation.