i1 : S = tetragonalK3 11
o1 = K3 surface with rank 2 lattice defined by the intersection matrix: | 20 4 |
| 4 0 |
-- (1,0): K3 surface of genus 11 and degree 20 containing elliptic curve of degree 4 (GM fourfold)
-- (1,1): K3 surface of genus 15 and degree 28 containing elliptic curve of degree 4
-- (1,2): K3 surface of genus 19 and degree 36 containing elliptic curve of degree 4
-- (1,3): K3 surface of genus 23 and degree 44 containing elliptic curve of degree 4
-- (1,4): K3 surface of genus 27 and degree 52 containing elliptic curve of degree 4 (GM fourfold)
-- (1,5): K3 surface of genus 31 and degree 60 containing elliptic curve of degree 4
-- (1,6): K3 surface of genus 35 and degree 68 containing elliptic curve of degree 4 (GM fourfold)
-- (1,7): K3 surface of genus 39 and degree 76 containing elliptic curve of degree 4
-- (2,0): K3 surface of genus 41 and degree 80 containing elliptic curve of degree 8
-- (1,8): K3 surface of genus 43 and degree 84 containing elliptic curve of degree 4
o1 : Lattice-polarized K3 surface
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