Please be aware that for the purpose of this document, "Semichah" refers to ordination of a rabbi or judge.
How many judges are needed to confer this approval: Sanhedrin 2a; 3b; 13b
Local Semichah authority, in Israel and Bavel: Sanhedrin 5a
Requiring Approval to check for a First-Born Animal's Blemish: Yoma 78a; Sanhedrin 5a-b
A student requires approval from his master before he may declare law: Sanhedrin 5b
Requiring one's master's approval before ruling in the master's area: Sanhedrin 5b
The three tiers of permission - Declaration of law, Adjudication of cases, and Examination of first-born animals for blemishes: Sanhedrin 5a-b
Partial Semichah: Sanhedrin 5b
Semichah with a time limit: Sanhedrin 5b
Political considerations in giving license to adjudicate: Sanhedrin 5a-b
Concern that a candidate may be too skilled, so that granting him license to rule may cause others to err in misunderstanding his rulings: Sanhedrin 5b
A student being known as his father's son, without mention of his own name, before his ordination: Taanit 3a