Since the early 21st century, middle classes of Global South became a focus attention. However, precarious minimum income was all it took to be considered class. But who exactly is class? As term applied, should certainly not confused with Marxist theories It refers socio-economic status somewhere between highest and lowest echelons society. What constitutes class remains too nebulous. This art...

Abstract We show that, assuming the Axiom of Determinacy, every non-selfdual Wadge class can be constructed by starting with those level $\omega _1$ (that is, ones that are closed under Borel preimages) and iteratively applying operations expansion separated differences. The proof is essentially due to Louveau, it yields at same time a new theorem Van Wesep (namely, expressed as result Hausdorf...