How many dayanim are needed for pshara and four shitos up until when pshara can be done and if it's a mitzvah

A dayin mumcha lrabim paskening on mamon and getting smicha in eretz yisroel does it work in bavel

Rav Acha shita that mdoraisa one dayin is enough and how we know the dayanim machlokes Reb yoshia and Reb Yonoson

When we need different amounts of dayanim and why hodah and halva doesn't need dayanim mumchin 

When we need different amounts of dayanim and why hodah and halva doesn't need dayanim mumchin 

More on shibuda doraisa or drabanan and does an ureiv need a kinyan in order to be mechayev himself

When somebdoy is makdish his nechosim and then says he owes somebdoy money and is shibud nechosim doraisa or drabanan

Machlokes by kablanus,what's and arev and whats a kablan,and arev by kesubah

Braisos if two yosef Ben shimons can collect from others or each other and collecting from the Uraiv