Luh Putu Ida Harini is a lecturer at the Mathematics Study Program, Faculty of Mathematics and Natural Sciences, Udayana University, Bali, Indonesia. She was born in Bangli in 1980. She completed her bachelor's degree in Mathematics Department, Gadjah Mada University in 2003 and completed her master's at the same university in 2011. She is pursuing the field of analytical mathematics especially in the fields of integral theory and real analysis.  Apart from that she was very interested in combinatorics and mathematical modeling. She really hopes to be a good problem solver not only for math problems but also a good problem solver for real problems. As a lecturer, Luh Putu Ida Harini is involved in teaching several subjects including Advanced Calculus, Discrete Mathematics, Real Analysis, and Exploration Mathematics. In addition to teaching, she also carries out research and community service activities so that she can be used as a place to share knowledge and carry out her hobbies.