[[Axiomatic set theory]] # Structural set theory A **structural set theory** is a set theory describing only [[Structuralism|structural]] mathematics, where sets are completely characterized by their relation to other sets. [[F. William Lawvere]] describes such set theories as prioritizing [[Form]] over [[Substance]]. ## Possible systems - [[ETCS]] # --- #state/develop | #lang/en | #SemBr