Mathematical research needs a lot of time, over hundred hours per month, and I do it just in my free time. Since 2016 I have published four articles in well-known journals. Please note that none of these brings any income. It is totally unpaid.

My research on regular matchstick graphs I do together with my colleagues Peter and Stefan. Both of them also work just in their free time – unpaid.

Please support me and my mathematical research on **Patreon** to advance the mathematics from where all people benefit – in some way.