Try fix #518

examples/ipython/issue-518.ipynb

@@ -0,0 +1,86 @@
+{
+ "cells": [
+ {
+ "cell_type": "code",
+ "execution_count": 2,
+ "id": "2956314d-53f6-4150-ab15-90eaa84e8815",
+ "metadata": {},
+ "outputs": [
+ {
+ "data": {
+ "text/latex": [
+ "$\\displaystyle 1$"
+ ],
+ "text/plain": [
+ "1"
+ ]
+ },
+ "execution_count": 2,
+ "metadata": {},
+ "output_type": "execute_result"
+ }
+ ],
+ "source": [
+ "from galgebra.ga import Ga\n",
+ "import sympy as S\n",
+ "\n",
+ "ga = Ga('e', g=[1,1,1], coords=S.symbols(f\"0:{3}\", real=True), wedge=False)\n",
+ "x,y,z = ga.mv()\n",
+ "(x**0).grade()"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 3,
+ "id": "2fa9ab19-eb44-4eb8-b369-453cd779a249",
+ "metadata": {},
+ "outputs": [
+ {
+ "data": {
+ "text/latex": [
+ "$\\displaystyle 1$"
+ ],
+ "text/plain": [
+ "1"
+ ]
+ },
+ "execution_count": 3,
+ "metadata": {},
+ "output_type": "execute_result"
+ }
+ ],
+ "source": [
+ "(x**2).grade()"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": null,
+ "id": "9b287705-2c5a-4a6b-88f4-ba7c7c336947",
+ "metadata": {},
+ "outputs": [],
+ "source": []
+ }
+ ],
+ "metadata": {
+ "kernelspec": {
+ "display_name": "Python 3 (ipykernel)",
+ "language": "python",
+ "name": "python3"
+ },
+ "language_info": {
+ "codemirror_mode": {
+ "name": "ipython",
+ "version": 3
+ },
+ "file_extension": ".py",
+ "mimetype": "text/x-python",
+ "name": "python",
+ "nbconvert_exporter": "python",
+ "pygments_lexer": "ipython3",
+ "version": "3.9.18"
+ }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 5
+}

galgebra/mv.py

@@ -819,7 +819,7 @@ def __pow__(self, n): # Integer power operator
  if n < 0:
  return (self**(-n)).inv()
 
- result = S.One
+ result = Mv(S.One, 'scalar', ga=self.Ga)
  for x in range(n):
  result *= self
  return result