#2009 ⟨a, b | aabbbbaa=ab

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  2. Rewriting system

Properties

Rewriting system

Format:
Word to reduce:
Tips:
  • Lowercase letters stand for generators.
  • Spaces are ignored.
  • Numbers repeat the previous letter, e.g. b90.
Reduction strategy:
Path to normal form: 1
1
#RuleProof
1. ab3 ⇒ c [2]
2. acba2 ⇒ ab [3]
3. c2ba2 ⇒ cb [11]
4. acbac ⇒ cb [4]
5. acbab ⇒ cb2a2 [7]
6. a(cb)2 ⇒ cb2ac [8]
7. cb4 ⇒ c2bac [13]
8. abcba2 ⇒ ab2 [5]
9. (cb)2a2 ⇒ cb2 [12]
10. abcbac ⇒ cb2 [6]
11. abcbab ⇒ cb3a2 [18]
12. c2bacb ⇒ (cb)2ac [14]
13. ab(cb)2 ⇒ cb3ac [19]
14. cb2aca2 ⇒ acb2 [27]
15. ab2cba2 ⇒ c [9]
16. cb2cba2 ⇒ cb3 [15]
17. ab2cbac ⇒ cb3 [10]
18. ab2cbab ⇒ c2baca2 [21]
19. (cb)2acb ⇒ cb2cbac [17]
20. ab2(cb)2 ⇒ c2b(ac)2 [26]
21. cb2a2b2 ⇒ acbc [22]
22. (cb)2aca2 ⇒ c2bab [23]
23. cb3aca2 ⇒ abcb2 [32]
24. cb3cba2 ⇒ c2bac [16]
25. (cb)2(ac)2 ⇒ c(cb)2 [28]
26. (cb)2acab ⇒ c2bcb2a2 [40]
27. cb2(ac)2b ⇒ acb2cbac [34]
28. cb2cbacb ⇒ cb3cbac [20]
29. (cb)2ac2b ⇒ c2bcb2ac [41]
30. cb3a2b2 ⇒ a(bc)2 [38]
31. cb2acb3 ⇒ acbc2bac [31]
32. c2b(ac)2a2 ⇒ ab2cb2 [33]
33. cb2(ac)2a2 ⇒ ac2bab [43]
34. cb2cbaca2 ⇒ (cb)2ab [24]
35. cb2(ac)3 ⇒ ac(cb)2 [48]
36. cb2cb(ac)2 ⇒ (cb)3 [29]
37. cb2a(ca)2b ⇒ ac2bcb2a2 [60]
38. cb2cbacab ⇒ (cb)3ba2 [52]
39. cb3(ac)2b ⇒ a(bcb)2ac [47]
40. cb3cbacb ⇒ (c2ba)2c [35]
41. cb2acac2b ⇒ ac2bcb2ac [61]
42. cb2cbac2b ⇒ (cb)3bac [53]
43. c2baca2b2 ⇒ ab(bc)2 [39]
44. cb3acb3 ⇒ abcbc2bac [42]
45. cb3(ac)2a2 ⇒ abc2bab [45]
46. cb3cbaca2 ⇒ cb2cbab [25]
47. cb3(ac)3 ⇒ abc(cb)2 [50]
48. cb3cb(ac)2 ⇒ cb2(cb)2 [30]
49. cb3a(ca)2b ⇒ abc2bcb2a2 [63]
50. cb3cbacab ⇒ cb(bc)2b2a2 [67]
51. c2b(ac)3b ⇒ a(b2c)2bac [55]
52. cb3acac2b ⇒ abc2bcb2ac [70]
53. cb3cbac2b ⇒ cb(bc)2b2ac [68]
54. c2b(ac)2b3 ⇒ ab2cbc2bac [54]
55. c2b(ac)3a2 ⇒ ab2c2bab [56]
56. (c2ba)2ca2 ⇒ cb3cbab [36]
57. cb2ac2baca2 ⇒ acbc2bab [44]
58. c2b(ac)4 ⇒ ab2c(cb)2 [58]
59. (c2ba)2cac ⇒ cb3(cb)2 [37]
60. cb2ac2b(ac)2 ⇒ a(cbc)2b [49]
61. c2ba(ca)3b ⇒ ab2c2bcb2a2 [65]
62. (c2ba)2cab ⇒ cb3cbcb2a2 [74]
63. cb2ac2bacab ⇒ a(cbc)2b2a2 [62]
64. c2b(ac)3cb ⇒ ab2c2bcb2ac [72]
65. c2b(ac2b)2 ⇒ cb3cbcb2ac [75]
66. cb2(ac2b)2 ⇒ a(cbc)2b2ac [69]
67. cb3ac2baca2 ⇒ abcbc2bab [46]
68. cb3ac2b(ac)2 ⇒ ab(cbc)2b [51]
69. cb3ac2bacab ⇒ ab(cbc)2b2a2 [64]
70. cb3(ac2b)2 ⇒ ab(cbc)2b2ac [71]
71. (c2baca)2a ⇒ ab2cbc2bab [57]
72. c(cb(ac)2)2 ⇒ ab2(cbc)2b [59]
73. (c2baca)2b ⇒ ab2(cbc)2b2a2 [66]
74. c2bac(ac2b)2 ⇒ ab2(cbc)2b2ac [73]
# ab:aabbbbaa=ab reversed:acb abbb=c morph:4/0
abbb=c
acbaa=ab
ccbaa=cb
acbac=cb
acbab=cbbaa
acbcb=cbbac
cbbbb=ccbac
abcbaa=abb
cbcbaa=cbb
abcbac=cbb
abcbab=cbbbaa
ccbacb=cbcbac
abcbcb=cbbbac
cbbacaa=acbb
abbcbaa=c
cbbcbaa=cbbb
abbcbac=cbbb
abbcbab=ccbacaa
cbcbacb=cbbcbac
abbcbcb=ccbacac
cbbaabb=acbc
cbcbacaa=ccbab
cbbbacaa=abcbb
cbbbcbaa=ccbac
cbcbacac=ccbcb
cbcbacab=ccbcbbaa
cbbacacb=acbbcbac
cbbcbacb=cbbbcbac
cbcbaccb=ccbcbbac
cbbbaabb=abcbc
cbbacbbb=acbccbac
ccbacacaa=abbcbb
cbbacacaa=accbab
cbbcbacaa=cbcbab
cbbacacac=accbcb
cbbcbacac=cbcbcb
cbbacacab=accbcbbaa
cbbcbacab=cbcbcbbaa
cbbbacacb=abcbbcbac
cbbbcbacb=ccbaccbac
cbbacaccb=accbcbbac
cbbcbaccb=cbcbcbbac
ccbacaabb=abbcbc
cbbbacbbb=abcbccbac
cbbbacacaa=abccbab
cbbbcbacaa=cbbcbab
cbbbacacac=abccbcb
cbbbcbacac=cbbcbcb
cbbbacacab=abccbcbbaa
cbbbcbacab=cbbcbcbbaa
ccbacacacb=abbcbbcbac
cbbbacaccb=abccbcbbac
cbbbcbaccb=cbbcbcbbac
ccbacacbbb=abbcbccbac
ccbacacacaa=abbccbab
ccbaccbacaa=cbbbcbab
cbbaccbacaa=acbccbab
ccbacacacac=abbccbcb
ccbaccbacac=cbbbcbcb
cbbaccbacac=acbccbcb
ccbacacacab=abbccbcbbaa
ccbaccbacab=cbbbcbcbbaa
cbbaccbacab=acbccbcbbaa
ccbacacaccb=abbccbcbbac
ccbaccbaccb=cbbbcbcbbac
cbbaccbaccb=acbccbcbbac
cbbbaccbacaa=abcbccbab
cbbbaccbacac=abcbccbcb
cbbbaccbacab=abcbccbcbbaa
cbbbaccbaccb=abcbccbcbbac
ccbacaccbacaa=abbcbccbab
ccbacaccbacac=abbcbccbcb
ccbacaccbacab=abbcbccbcbbaa
ccbacaccbaccb=abbcbccbcbbac