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5 years ago · db7d187168
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--- a/00.brainstorming-pedagogical-teams/99.new-propositions/20.sets-systems/textbook.en.md
+++ b/00.brainstorming-pedagogical-teams/99.new-propositions/20.sets-systems/textbook.en.md
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+---
+title: From sets to systems
+published: true
+routable: true
+visible: false
+---
+
+From sets to systems