👉 Descending math, also known as reverse mathematics, is a branch of mathematical logic that seeks to understand the logical strength required to prove various mathematical theorems. It involves analyzing which axioms are necessary to prove a given theorem and determining the weakest set of axioms (a "proof system") that can support that theorem. In essence, it asks: What are the minimum logical principles needed to establish a particular mathematical result? By identifying these minimal axioms, descending math helps clarify the foundational requirements of mathematics and reveals connections between different areas of mathematical logic and set theory. This process not only aids in understanding the necessity of certain axioms but also provides insights into the structure and hierarchy of mathematical truths, often leading to a deeper appreciation of the logical underpinnings of mathematics.