What is semicha?

Some articles on semicha:

Modern Attempts To Revive The Sanhedrin - Rabbi Beirav, The Model For The Current Attempt - Conclusion
... Rabbi Yosef Karo for the fact that he received semicha from Rabbi Yakov Beirav and transmitted it onward ... Rabbi Yosef Karo is known to have used his semicha to ordain Rabbi Moses Alsheich, who in turn, ordained Rabbi Chaim Vital ... Thus semicha can be traced for at least four generations ...
Women Rabbis - Ordination
... Traditionally, a person obtains semicha ("rabbinic ordination") after the completion of an arduous learning program in the codes of Jewish law and responsa ... The most general form of semicha is Yore yore ("he shall teach") ... A more advanced form of semicha is Yadin yadin ("he shall judge") ...
Modern Attempts To Revive The Sanhedrin - Rabbi Beirav, The Model For The Current Attempt - The Dispute
... The Ralbach however rejected the semicha ... doubts over the applicability of semicha ... reviewed the halachic basis for re-establishment of semicha ...
Moshe Kletenik
... and Yeshivas Brisk of Chicago, he received "Yoreh Yoreh" semicha from Rabbi Ahron Soloveichik ... Rabbi Kletenik received semicha in the areas of gittin and Even Ha'ezer and "Yadin Yadin" semicha from Rabbi Gedalia Dov Schwartz in 2004 and 2009 respectively ... Rabbi Kletenik presently heads the Semicha Standards Committee of the RCA ...
Semikhah
... "), also semichut (Hebrew סמיכות‎, "ordination"), or semicha lerabbanut (Hebrew סמיכה לרבנות‎, "rabbinical ordination") is derived from a Hebrew word which means to "rely on" or "to be authorized" ... Some believe evidence exists that classical semicha was existent during the 12th century when semuchim from Lebanon and Syria were traveling to Israel in order to pass on semikhah to their students ... in the times of the Temple in Jerusalem, see Semicha in sacrifices ...