Left-sorted Problems have the keyword "right-listable" on the OEBP.
BPs are sorted based on how BP563 (left-listable) would sort them were they flipped; see that page for a description.
See right-finite, which distinguishes between finite right side and infinite right side.
Adjacent-numbered pages: BP935 BP936 BP937 BP938 BP939  *  BP941 BP942 BP943 BP944 BP945
meta (see left/right), links, keyword
bp_infinite_right_examples [smaller | same | bigger] zoom in right (right_uncountable_bp)
Leo Crabbe