In this errata, we reconsider and modify two propositions and their corollaries which were written on epi-retractable and co-epi-retractable modules.

Propositions form the basis for scientific research. The validity of a research study is, to a large extent, evaluated on the criteria of its propositions. For internal validity, study propositions provide information regarding precision of definitions, measurements, associations, confounding factors etc. that are considered in research. While for external validity, propositions form the premis...

one of the most controversial problems in western epistemology is the division of propositions into analytic and synthetic. this division drew the attention of many proponents and opponents and faced many objections. one the most important objections which if valid enough, can destroy the basis of this division and resulting epistemological consequences is the of relativity of both analytic as ...