After this Catalan encouraged Mansion and Neuberg to collaborate in publishing a new journal and, indeed, they did precisely this, publishing Mathesis from 1881 onwards.
Pagkatapos hinihimok na ito Catalan Mansion at Neuberg na makipagtulungan sa-publish ng isang bagong journal, at sa katunayan, sila ay tiyak na ito, publish Mathesis mula 1881 pasulong.