What is referred to by '13 14'?

What is associated with: 1297 rainier i? Based on the clue '12th c mathematician bhaskara had an idea for this...', what is the answer? Based on the clue '12th century nun heloise penned her famous love le...', what is the answer? Based on the clue '12th century rabbi benjamin of tudela may have bee...', what is the answer? Based on the clue '13 csub3subhsub5subnsub3subosub9sub it can yield e...', what is the answer? Based on the clue '13 half hours after 630 pm', what is the answer? Based on the clue '13 items from your local bagel shop is sometimes c...', what is the answer? Based on the clue '13 letter collective name for any all forms of wa...', what is the answer?