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when toggle format what by license comment
Jul 19, 2023 at 3:02 comment added Tri The "$v_2$" should be "$v_1$", but thank you.
Jul 19, 2023 at 3:01 vote accept Tri
Jul 16, 2023 at 12:06 history edited Emil Jeřábek CC BY-SA 4.0
switch i and j to make the notation consistent
Jul 16, 2023 at 11:55 history answered Emil Jeřábek CC BY-SA 4.0