The same classification applies to the mentioned effective-spin "hedgehog" singularity": spin upwards at the northpole, but downward at the southpole. See also Döring, W. (1968). "Point Singularities in Micromagnetism". Journal of Applied Physics. 39 (2): 1006–1007. Bibcode:1968JAP....39.1006D. doi:10.1063/1.1656144.
The same classification applies to the mentioned effective-spin "hedgehog" singularity": spin upwards at the northpole, but downward at the southpole. See also Döring, W. (1968). "Point Singularities in Micromagnetism". Journal of Applied Physics. 39 (2): 1006–1007. Bibcode:1968JAP....39.1006D. doi:10.1063/1.1656144.