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References to 'isotope of a groupoid'
1. braid group by bwebste
2. examples of groups by AxelBoldt
3. F-isomorphisms in categories by joking
4. Fredholm module by mhale
5. Henri Poincar\'e by Daume
6. HNN extension by juanman
7. homeotopy by juanman
8. homothetic by drini
9. Hopf theorem by jirka
10. invariant differential form by asteroid
11. K-homology by mhale
12. K-theory by mhale
13. Moser's theorem by bwebste
14. organismic supercategories and super-complex systems biodynamics by bci1
15. proof of closed differential forms on a simple connected domain by paolini
16. proof of Scott-Wiegold conjecture by whm22
17. quantum space-times by bci1
18. semi-Fredholm operator by mhale
19. sphere theorem by juanman
20. tangle by apollonius
21. Teichm\"uller space by jirka
22. theory from orders of classical groups by Algeboy
23. topics on low dimensional topology by juanman
24. Whitehead Prize by PrimeFan
25. writhe by PrimeFan
26. y-homeomorphism by juanman
27. \'etale fundamental group by archibal