welcome hello and welcome to wikipedia thank you for your contributions i hope you like the place and decide to stay here are some pages that you might find helpful the five pillars of wikipedia how to edit a page help pages tutorial how to write a great article manual of style i hope you enjoy editing here and being a wikipedian please sign your name on talk pages using four tildes this will automatically produce your name and the date if you need help check out wikipedia questions ask me on my talk page or place helpme on your talk page and ask your question there again welcome and don't forget the edit summary is your friend png images hi i undid your changes to holomorphic function since converting html to latex produces png images which are undesirable per the math style manual html is allowed and sometimes preferred in math formulas and as such converting them to latex is not necessary you can reply here if you have comments cheers