Katäfalsen: Difference between revisions

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 ==== Mathematical background ====
-[[File:Braid rule1-1.png|thumb|Geometrical interpretation of the first relation of braid groups]]
+<gallery>
-[[File:Braid rule2-1.png|thumb|Geometrical interpretation of the second relation of braid groups]]
+Braid rule1-1.png|First relation of braid groups: s<sub>1</sub>s<sub>3</sub> = s<sub>3</sub>s<sub>1</sub>
+Braid rule2-1.png|Second relation of braid groups: s<sub>1</sub>s<sub>2</sub>s<sub>1</sub> = s<sub>2</sub>s<sub>1</sub>s<sub>2</sub>
+</gallery>
 == Vocabulary ==