Revision history [back]
 | 1 | initial version |
sage: a1=arrow((0,0,0), (1,1,1))
sage: a2=arrow((1,1,1), (2,2,3))
sage: a3=arrow((2,2,3), (3,3,1))
sage: a1+a2+a3
| | 1 | initial version |
sage: a1=arrow((0,0,0), (1,1,1))
sage: a2=arrow((1,1,1), (2,2,3))
sage: a3=arrow((2,2,3), (3,3,1))
sage: a1+a2+a3
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