I am a Ph.D. student in mathematics in number theory and would likely give a short contributing (15-minute) talk at a big conference. I have prepared short slides for the talk but plan to go with chalk and talk. I have given slides presentation before but have no experience with chalk and talk. I need your suggestion, provided I am not very good at writing mathematical notations.
My main question is another one. Certainly, there are invited, speakers. But, I was not invited but applied to the conference, and then the organizers accepted my registration with partial financial support (accommodation+food). Many others belong to my category. Now those who are invited will thank the organizers at the beginning of their talks e.g., they will say "I thank the organizers for their invitation".
But since I am not an invited speaker, how should I start the talk? how should I thank the organizers?
Thank you for your suggestion.