A minimal set of generators for the cohomology is:
  • w1(r10) of degree 1
  • w1(r2) of degree 1
  • w4(r11) of degree 4
The Steenrod operations are as follows:
  • Sq1(w4(r11)) = 0
  • Sq2(w4(r11)) = 0
  • Sq3(w4(r11)) = 0
Here is a minimal system of equations:
  • (1)          w1(r10)w1(r2) + w1(r2)2 = 0
  • (2)          w1(r10)3 = 0
Stiefel-Whitney classes:
  • w1(r1) = w1(r10) + w1(r2)
  • w1(r2) = w1(r2)
  • w1(r3) = w1(r10)
  • w1(r4) = w1(r10)
  • w2(r4) = 0
  • w1(r5) = w1(r10)
  • w2(r5) = 0
  • w1(r6) = w1(r10)
  • w2(r6) = 0
  • w1(r7) = w1(r10)
  • w2(r7) = w1(r10)2
  • w1(r8) = w1(r10)
  • w2(r8) = w1(r10)2
  • w1(r9) = w1(r10)
  • w2(r9) = w1(r10)2
  • w1(r10) = w1(r10)
  • w2(r10) = w1(r10)2
  • w4(r11) = w4(r11)
  • w4(r12) = w4(r11)
  • w4(r13) = w4(r11)
  • w4(r14) = w4(r11)
  • w4(r15) = w4(r11)
  • w4(r16) = w4(r11)
  • w4(r17) = w4(r11)
  • w4(r18) = w4(r11)
Chern classes:
  • c1(r1) = w1(r10)2 + w1(r10)w1(r2)
  • c1(r2) = w1(r10)w1(r2)
  • c1(r3) = w1(r10)2
  • c1(r4) = w1(r10)2
  • c2(r4) = 0
  • c1(r5) = w1(r10)2
  • c2(r5) = 0
  • c1(r6) = w1(r10)2
  • c2(r6) = 0
  • c1(r7) = w1(r10)2
  • c2(r7) = 0
  • c1(r8) = w1(r10)2
  • c2(r8) = 0
  • c1(r9) = w1(r10)2
  • c2(r9) = 0
  • c1(r10) = w1(r10)2
  • c2(r10) = 0
  • c2(r11) = w4(r11)
  • c2(r12) = w4(r11)
  • c2(r13) = w4(r11)
  • c2(r14) = w4(r11)
  • c2(r15) = w4(r11)
  • c2(r16) = w4(r11)
  • c2(r17) = w4(r11)
  • c2(r18) = w4(r11)
The algebra of Milnor constants is generated by:
  • c2(r11)
  • c1(r2)
  • c1(r1) + c1(r2)
  • Note: the only algebraic cycles in the cohomology are Chern classes.
The results above have been produced during the second run in April, 2008.