#733 (Jan 29, 2017, 8:16:03 PM)

1. added inj_def (redundant, analogous to surj_def, bij_def);
   tuned proofs; (detail / hgweb)
2. tuned proofs; (detail / hgweb)
3. tuned proof; (detail / hgweb)
4. tuned whitespace; (detail / hgweb)

Started by an SCM change

This run spent:

• 5 min 0 sec waiting;
• 1 hr 30 min build duration;
• 1 hr 35 min total from scheduled to completion.