# Geometric function theory in several complex variables: by Sheng Gong, Carl H. FitzGerald

By Sheng Gong, Carl H. FitzGerald

The papers contained during this booklet handle difficulties in a single and a number of other complicated variables. the most subject is the extension of geometric functionality thought tools and theorems to a number of advanced variables. The papers current a number of effects at the development of mappings in quite a few periods in addition to observations concerning the boundary habit of mappings, through constructing and utilizing a few semi crew equipment.

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I) are in perspective i. e. if the rays CC\... , BC and same straight B C ,... will cut line^ viz. the inter section of the planes of the two figures. be shown that M if is a point lying on the a straight line in the plane lying then the M\ passes through corresponding straight line a will also pass through M. Eut this is evidently the case, since the It is to straight line two a- or , and if &lt;r, &lt;z, straight lines a and a are the intersections of the same projecting plane with the two planes a- and a- and conse a, and a meet in a point, quently the three straight lines , &lt;r&lt;/, that viz.

They a, a lie therefore in the same plane intersect on the plane Two of *. for all the points TT; corresponding planes and all the straight and therefore the lines of this last plane correspond to themselves, coincides with the straight line OTT. a, a evidently contain two figures in perspective of Arts. 12 and 14). the planes (like straight line O TT The two planes &lt;/ &lt;r, 25. In every plane lies a vanishing line i passing through which is the image of the point at infinity in the same plane.

And * the symbols OA OB OC of rays lines oa, a&, ay, ... ( , ) &gt;7, A B , , , 6 , ... , . . ), the respectively. To denote will be denoted and by ABC s ... , will , be used GEOMETRIC FORMS. 30] From an (Art. 2). \$ (a , (3 , (Art. 5) y ; a- . . is derived a range (Art. 3). ) ; from a centre jecting 29. In a similar (Art. manner the of Art. 2 or Art. 3 ; and reciprocally, if transversal plane we , # ... ) two figures of Art. 27 can help of one of the operations last we project from a we obtain a sheaf of lines in fact, if plane of points or lines cut a sheaf of lines or planes obtain a plane of points or lines.