1. The basic idea of DFT is an ansatz, which assumes that any properties of many-body system can be determined by the ground state density.

2. The Bethe ansatz equations are obtained from the periodic boundary conditions.

3. Aus m? nnlicher Sicht werden sowohl M ? nner als auch Frauen durch unseren neuartigen und humorvollen Ansatz adressiert.

4. Then, based on the fundamental equation, we present the chirped femtosecond soliton-like solution by ansatz method and discuss the transmission property of the soliton-like solution in optical fiber.

5. First, chirped femtosecond soliton-like solution in explicit form is obtained by using ansatz method, and then the linear stability for the soliton-like solution is analyzed by variational method.