👉 Irrefrangibility is a concept in philosophy that refers to a property of mathematical structures, such as groups or rings. The term originates from Greek and means "indefeasible" or "unchangeable". It's often used in mathematics to describe the inability for two elements to be changed into each other without changing their nature or structure. This concept helps distinguish between different types of structures: one that can be expressed in terms of itself, another that cannot (due to its inherent properties