TY - JOUR AU - Richard Mansfield TI - The non-existence of $Σ^1_2$ well-orderings of the Cantor set JO - Fundamenta Mathematicae PY - 1974 SP - 279 EP - 282 VL - 86 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/fm-86-3-279-282/ DO - 10.4064/fm-86-3-279-282 LA - en ID - 10_4064_fm_86_3_279_282 ER -