Task: Text Simplification
Input (English): the foundations of quantum mechanics were established during the first half of the twentieth century by werner heisenberg , max planck , louis de broglie , albert einstein , niels bohr , erwin schrödinger , max born , john von neumann , paul dirac , wolfgang pauli , david hilbert , and others.
Output (English): the foundations of quantum mechanics were made during the first half of the 1900s by werner heisenberg , max planck , louis de broglie , albert einstein , niels bohr , erwin schrodinger , max born , john von neumann , paul dirac , wolfgang pauli , david hilbert , and others.