This is the 14239th most frequent Russian word.
основателя
"Основателя" means "founder" in English.
'Основателя' is in the genitive case, indicating possession, showing that the achievements belong to the founder (of the university).
Многие отмечают достижения основателя университета.
Many highlight the achievements of the university's founder.
Here, 'основателя' appears in the instrumental case, after the preposition 'с', describing that they met the individual who started the movement.
Мы встретились с основателем нового движения.
We met with the founder of the new movement.
Here, 'основателя' is in the genitive case due to the preposition 'об', and it denotes the person who established the company.