??? extent to which ("double" ...) cone falls apart when apex is removed .... ????? .....

?? so ... ?? total space of certain line bundle over projective line ... ???? "2nd" ... ??? canonical, or antocanonical, maybe ??? .... as .... ????non-singular quasi-affine, with Z/2 divisor class group?? the non-trivial line bundle being ... ??? hopefully somewhat easy to grasp, visually and so forth .... ????? .....

???? trying to understand this ("kummeresque") divisor class group fan-wise ... ???? ....

??? some confusion about this .... ???? cocone category .... riding on bike path that day .... south of fairmount park turnoff .... modified version ... "ignoring negligible ... " .... ???? ..... ???? different perspective now ??? .... but what about that old perspective ??? ....

co-/tangent bundle vs co-/sp (...) bundle over projective line .... double cone shape ....

??? extent to which line falls apart when origin is removed ... ???? .... ?? hmmm, very different question?? ... different dimensioj ... ?? ...

?? pulling back from base space the spinor bundle ... ??? ....