pattern with calligraphic brush stroke pluses, minuses and paint splashes on white background. tribal concept. turquoise, pink,

abstract algebra artistic backdrop background black brush calculus calligraphic colors concept creative cross decoration design dots drawing education elements ethnic good graphic grunge hand illustration ink isolated math mathematics minus minuses modern paint pattern pink pluses print school seamless set simple splash splashes stroke surface symbol template texture tile trendy tribal turquoise vintage wallpaper white