# Translation

Generator of Translation

—————————- $e^{a \frac{d}{dx}} = \sum_{n=0}^\infty \frac{1}{n!} a^n \left( \frac{d}{dx}\right)^n f(x)$

—————————- $f(x) = \sum_{n=0}^{\infty} \frac{f^{(n)}(a)}{n!}(x-a)^n$ $f(x+a) = \sum_{n=0}^{\infty} \frac{f^{(n)}(a)}{n!} x^n$ $f(a+x) = \sum_{n=0}^{\infty} \frac{f^{(n)}(x)}{n!} a^n$ $= \sum_{n=0}^{\infty} \frac{1}{n!} a^n \left( \frac{d}{dx} \right)^n f(x)$

—————————- $e^{a \frac{d}{dx}} f(x) = f(x+a)$

2007.10.06 Saturday (c) CHK2

# Recognizer and nurturer of talent

1. It is a rare, special human trait in teachers to be able to deal with students more talented than themselves, being able to kindly and effectively transfer their life experience and body of knowledge to those more gifted.

2. László Rátz was such a teacher, with refined sense for talent that he dealt with as equals, as colleagues, as peers.

3. For instance, when he felt he could no longer provide anything more to Johnny Neumann, he requested the university professor Michael Fekete to help out and teach him.

4. Eugene Wigner was asked in the late 1970’s ‘Do you remember Rátz?’ to which he answered: ‘There he is!’ and pointed to a picture of Rátz on his office wall.

–Wikipedia

2007.10.06 Saturday CHK2