Title: वैकल्पिक

Text: One does not need to invoke the axiom of choice to construct a choice function on a finite number of sets. This can be done using existential instantiation a finite number of times. Nor is the axiom necessarily needed to construct a choice function on an infinite collection of sets. For example, if the union of such a collection has a bijective correspondence with a well-ordered set. The axiom of choice is only needed when constructing a choice function would require infinitely many steps. प्रत्येक पराग्राफले परीक्षण हुनेछ।

Save test: यदि तपाईं यो टाइपिङ परीक्षणलाई साझा गर्न चाहानुहुन्छ भने यो प्रयोग गर्नुहोस् (केवल प्रमाणीकृत प्रयोगकर्ताहरूको लागि)।