$CreationDate (Built-in Mathematica Symbol)

$CreationDate gives the date and time at which the particular release of the Mathematica kernel you are running was created.

$HomeDirectory (Built-in Mathematica Symbol)

$HomeDirectory gives your "home" directory.

$InstallationDirectory (Built-in Mathematica Symbol)

$InstallationDirectory gives the top-level directory in which your Mathematica installation resides.

$LicenseExpirationDate (Built-in Mathematica Symbol)

$LicenseExpirationDate is a date list that gives the expiration date for the license under which Mathematica is being run.

$Output (Built-in Mathematica Symbol)

$Output gives the list of files and pipes to which standard output from Mathematica is sent.

$UserDocumentsDirectory (Built-in Mathematica Symbol)

$UserDocumentsDirectory gives your default "documents" directory.

Constrained Optimization in ... (Mathematica Tutorial)

[1] Mehrotra, S. "On the Implementation of a Primal-Dual Interior Point Method." SIAM Journal on Optimization 2 (1992): 575–601. [2] Nelder, J.A. and R. Mead. "A Simplex ...

Editing Mathematica Graphics Overview (Mathematica Overview)

Introduction to Editing Mathematica Graphics Drawing Tools Selecting Graphics Objects

Entering a Single-Machine Password (Mathematica Tutorial)

If the Mathematica client cannot get a license from MathLM, you are given the option of entering a single-machine password. When using a single-machine password, Mathematica ...

Generating C and Fortran Expressions (Mathematica Tutorial)

If you have special-purpose programs written in C or Fortran, you may want to take formulas you have generated in Mathematica and insert them into the source code of your ...