pygae/galgebra

# Author:  Greg Grunberg
# Last revised:  2023-01-13

# INSTRUCTIONS:
#
# To invoke this program within a Jupyter notebok, write the command
#
#     from galgebra.primer import *
#
# in the notebook's first In[ ] cell and execute that cell.

from sys import version

# Make SymPy available to this program
import sympy
from sympy import *

# Make GAlgebra available to this program.
import galgebra
from galgebra.ga import *
from galgebra.mv import *
from galgebra.lt import *
from galgebra.dop import *
from galgebra.printer import Fmt, GaPrinter, Format
# Fmt:  sets display mode of a multivector's basis expansion.
# GaPrinter:  makes GA output a little more readable.
# Format:  turns on latex printer.
from galgebra.gprinter import gFormat, gprint
gFormat()
# Default `Fmode=True` suppresses display of the arguments of
#   multivector fields.
# Default `Dmode=True` causes partial differentiation
#   operators to be displayed in shortened form.
Ga.dual_mode('Iinv+')
# Sets multivector dualization to be right multiplication by the
# by the inverse unit pseudoscalar (the convention used in the
# textbooks LAGA, VAGC, and GACS).
initializations_list = r"""\textsf{The following initialization commands were executed:}\\
\quad\texttt{from sys import version}\\
\quad\texttt{import sympy}\\
\quad\texttt{from sympy import *}\\
\quad\texttt{import galgebra}\\
\quad\texttt{from galgebra.ga import *}\\
\quad\texttt{from galgebra.mv import *}\\
\quad\texttt{from galgebra.lt import *}\\
\quad\texttt{from galgebra.dop import *}\\
\quad\texttt{from galgebra.printer import Fmt, GaPrinter, Format}\\
\quad\texttt{from galgebra.gprinter import gFormat, gprint}\\
\quad\texttt{gFormat()}\\~~~~~~~~
\quad\textsf{# default 'Fmode=True' suppresses arguments of multivector fields}\\~~~~~~~~
\quad\textsf{# default 'Dmode=True' displays partial differentiation operators in short form}\\
\quad\texttt{Ga.dual_mode('Iinv+')}\\~~~~~~~~
\quad\textsf{# dual and undual defined by }\mathbf{M}^\star = \mathbf{M}\mathbf{I}^{-1} \textsf{ and } \mathbf{M}^{-\star} = \mathbf{M}\mathbf{I}\\"""
gprint(initializations_list)

# Display versions of softwared being used.
gprint(r'\textsf{This notebook is now using} \\',
       r'\qquad\bullet~ \textsf{Python }', version[:5],
       r'\qquad\bullet~ \textsf{SymPy }', sympy.__version__[:8],
       r'\qquad\bullet~ \textsf{GAlgebra }', galgebra.__version__[:], r'.')