`desing/exdshrc`
An auxiliary procedure for `desing/exdsh`, tracing the weak
transform of exceptional components from the blowing up centers from
which they arise to the charts of the covering of the final blowing up
variety.
- Input:
-
- chi
- the ID of the chart to be processed,
- ei
- the index (in IND) of the defining equation of the
exceptional component in question,
- ex
- the exponent of the exceptional component in question.
- Output:
- -
The procedure assumes that chartHistory contains the chart
tree of a computed seqence of blowing ups and puts the sections of the
computed ideal sheaf into the SCS entries of the charts of the
covering of the final blowing up variety.