Difference between revisions of "M(8,5,5)"
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Revision as of 20:18, 23 September 2018
M(8,5,5) - [math]B_0(kSL_2(8))[/math]
Representative: | [math]B_0(kSL_2(8))[/math] |
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Defect groups: | [math]C_2 \times C_2 \times C_2[/math] |
Inertial quotients: | [math]C_7[/math] |
[math]k(B)=[/math] | 8 |
[math]l(B)=[/math] | 7 |
[math]{\rm mf}_k(B)=[/math] | 1 |
[math]{\rm Pic}_k(B)=[/math] | |
Cartan matrix: | [math]\left( \begin{array}{ccccccc} 8 & 4 & 4 & 4 & 2 & 2 & 2 \\ 4 & 4 & 2 & 2 & 0 & 2 & 1 \\ 4 & 2 & 4 & 2 & 1 & 0 & 2 \\ 4 & 2 & 2 & 4 & 2 & 1 & 0 \\ 2 & 0 & 1 & 2 & 2 & 0 & 0 \\ 2 & 2 & 0 & 1 & 0 & 2 & 0 \\ 2 & 1 & 2 & 0 & 0 & 0 & 2 \\ \end{array} \right)[/math] |
Defect group Morita invariant? | Yes |
Inertial quotient Morita invariant? | Yes |
[math]\mathcal{O}[/math]-Morita classes known? | Yes |
[math]\mathcal{O}[/math]-Morita classes: | [math]B_0(\mathcal{O}SL_2(8))[/math] |
Decomposition matrices: | [math]\left( \begin{array}{ccccccc} 1 & 0 & 0 & 0 & 0 & 0 & 0 \\ 1 & 1 & 1 & 1 & 0 & 0 & 0 \\ 1 & 0 & 1 & 0 & 0 & 0 & 1 \\ 1 & 0 & 0 & 1 & 1 & 0 & 0 \\ 1 & 1 & 0 & 0 & 0 & 1 & 0 \\ 1 & 1 & 1 & 0 & 0 & 0 & 1 \\ 1 & 0 & 1 & 1 & 1 & 0 & 0 \\ 1 & 1 & 0 & 1 & 0 & 1 & 0 \\ \end{array}\right)[/math] |
[math]{\rm mf}_\mathcal{O}(B)=[/math] | 1 |
[math]{\rm Pic}_{\mathcal{O}}(B)=[/math] | [math]C_3[/math]; |
[math]PI(B)=[/math] | {{{PIgroup}}} |
Source algebras known? | No |
Source algebra reps: | |
[math]k[/math]-derived equiv. classes known? | Yes |
[math]k[/math]-derived equivalent to: | M(8,5,4) |
[math]\mathcal{O}[/math]-derived equiv. classes known? | Yes |
[math]p'[/math]-index covering blocks: | |
[math]p'[/math]-index covered blocks: | |
Index [math]p[/math] covering blocks: | {{{pcoveringblocks}}} |
Basic algebra
Irreducible characters
All irreducible characters have height zero.