设 [tex=9.786x1.357]rzblEQN//57rZjljLTrcAoAOyHf1QKDNcCROEozwQX40JNMxCldxuD/TyFksD7U2[/tex] 试证下面三个条件等价:(1)[tex=8.357x1.286]39hUINlliUe4EN86GDobFGT2lkU3XhyX9XzwzDp6iOM=[/tex] 不可约,[tex=4.929x1.286]uCXdNpnxm6lESYMSu1WQzRqrSUnTiziotFXmQ/Pq5sU=[/tex].(2)[tex=4.857x1.357]XUS9ZCrILMFLDMYsp7+Yu2FkpCER1q2M1XUs0vEil0A=[/tex],或 [tex=6.214x1.357]SCBkc5H4H7gXsFShGuBkXHGQ7amFMmuOXsrvhaPqenQ=[/tex],或存在 [tex=0.571x1.0]rFc/sfAAuCOtzhevhoREeA==[/tex] 使得 [tex=5.214x1.286]/2kPEhKLiHhMkwJ7E2s5vNXmEt8olZBbBb2UXGmDOH4=[/tex](3)若 [tex=6.429x1.357]PPTewQDiYIYKJK37NA0z1D5KnwXkoIuzlsvhr/yFhWQ=[/tex],则 [tex=4.5x1.357]ShTuQDB0guSKuvZOgm7LB0dGW2npF11Qsz8N+RlM50c=[/tex] 或者存在 [tex=0.571x1.0]rFc/sfAAuCOtzhevhoREeA==[/tex] 使得 [tex=5.0x1.286]I6aAuYFjtKXyfoXeyaan3vX9GxujRycjzu1mmndJh80=[/tex].
举一反三
- 6个顶点11条边的所有非同构的连通的简单非平面图有[tex=2.143x2.429]iP+B62/T05A6ZTM0eeaWiQ==[/tex]个,其中有[tex=2.143x2.429]ndZSw3zT0QTOVLVdoUto1Q==[/tex]个含子图[tex=1.786x1.286]J+vVZa2YaMpc6mJBbqVvWw==[/tex],有[tex=2.143x2.429]lmhx48evnQMhi03NovPXig==[/tex]个含与[tex=1.214x1.214]kFXZ1uR8GjycbJx+Ts2kyQ==[/tex]同胚的子图。供选择的答案[tex=3.071x1.214]3KinXFh3SXhZ7nIe1y9KEV6aadxhhJWeEy6Dij1iObdMUZkY6ZA5J2dVVjPSuhEf[/tex]:(1) 1 ;(2) 2 ;(3) 3 ; (4) 4 ;(5) 5 ;(6) 6 ; (7) 7 ; (8) 8 。
- 判断下列命题是否为真:(1)[tex=3.643x1.357]/5abqJjwKZ1qr+6hsVFF5EBvfq3ggOFNlHMClz0h9nk=[/tex](2)[tex=2.929x1.357]rGJpyjIjJpbcoBTWxP0Jiw==[/tex](3)[tex=4.5x1.357]2wycHMoqU83MyEp17iBils58bR7YLuCTI2G9NVAdlfY=[/tex](4)[tex=5.214x1.357]CTz2gu+IIm1GgNmYMGaduCRtA41wnW4WqwRWwEhq6aA=[/tex](5)[tex=4.857x1.357]1DcE2BMMOaZhTuxR/mjgsboXxfg5ET59Dp4I/jjEDuw=[/tex](6)[tex=4.643x1.357]BSryrsQYOvTP2hTWRu6t4nAuJwlSs4L9jaq70EpB+Us=[/tex](7)若[tex=6.0x1.357]y0IZLUnBO88nR8WBZYvd7QXv5S1OMINV5cQNzPyiyAc=[/tex],则[tex=3.429x1.357]1brfPwTkVVIX4GfoMIUskA==[/tex](8)若[tex=7.643x1.357]MhLfJXZnhbXiB0x3oNtFzThV4Y1mJxe1VYr7PkJE/T6hmTD3WWp+UxbNwvUQ6DHk[/tex],则[tex=4.143x1.357]LZUA94ISo1po5HWsOVeBCjo0rMvj7uw3bGw5HiZenrI=[/tex]
- [tex=2.214x1.0]Z8GWW72u+MH/mjafnp+83A==[/tex]丙酮酸经过丙酮酸脱氢酶系和柠檬酸循环产生[tex=4.0x1.214]EPDWVFNjIR8daNoozaWRDg==[/tex],生成的[tex=3.214x1.0]1AqDCKqjaAug6buHS5Z0tQ==[/tex]、[tex=3.429x1.214]HYAn2+I9AZQLWcA3ajoPaw==[/tex]和[tex=2.143x1.0]qQANfGnLx7pE5mcaEibuNg==[/tex](或[tex=2.071x1.0]YGdeb/NAM7yg+XY6SY16Fg==[/tex])的摩尔比是( )。 未知类型:{'options': ['3:2:0', '4:2:1', '4:1:1', '3:1:1', '2: 2:2'], 'type': 102}
- 若 [tex=8.571x2.857]pfgA/HCz+2/+OBaPhuXgpwau0q6kdrhIWS9Qmf1Nco6Z7jBnyP+MVS6WDKxhEp1S[/tex], 则 [tex=0.571x1.0]rFc/sfAAuCOtzhevhoREeA==[/tex] 的值为 A: 0 B: 1 C: -1 D: 0 或 1
- 对素数 [tex=0.571x1.0]FGGpnaR8m8C48rN8O0c7aw==[/tex] 的不同值, 找出循环群[tex=1.143x1.357]oOz0oH4UpFaaOY7OuGotcg8wtMntQEjCiVorwD1W3R4=[/tex]的所有生成元和所有子群.(1) 7 ; (2) 11 ; (3) 13(4) 17 ; (5) 19 ; (6) 23 .