Research Reconstruction
Yang's corpus is organized around a small number of unusually durable ideas: symmetry as a physical object, local gauge invariance, parity as an experimentally testable assumption, analytic structure in statistical mechanics, exact solvability in one-dimensional systems, and the geometric meaning of gauge fields.
The 300 cases below are not asserted to be 300 distinct printed papers. They are a section-level reconstruction from papers, selected-paper commentaries, book chapters, lecture cases, archive classes, and historically important problem families. Strategy tags are intentionally overlapping; a single case may simultaneously use symmetry, geometry, and exact-model reasoning.
Interactive Strategy Tree
Overlapping Strategy Prevalence
Percentages mean case prevalence: a method used in 180 of 300 cases is shown as 60%. Because each case carries several method tags, the displayed percentages are not expected to sum to 100%.