## On triadic Cremona nets of plane curves |

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### Contents

notation Character is tic Square | 2 |

Statement of Problem | 3 |

4 Correspondences Developed by Products | 4 |

2 other sections not shown

### Common terms and phrases

become t2 birational correspondence Bologna characteristic group CORNELL UNIVERSITY correspondences having simple Correspondences with Simple corrispondenze birazionali piane Cremona group curves intersect equations 12 equations gives equations of condition f-curve group f-curves of order following characteristic square following correspondence funda fundamental curve fundamental points fundamental straight lines fundamental systems geometric correspondence gives the series GP+1 group coincide group numbers group of f-curves group of f-points hence i'or I'rom equations integers or zero integral value irom isologous correspondence Jonquieres correspondence Montesano multi necessary number of basis number of curves number of passages number of permutations number of points obtain original group parametric form plane i r a plicity point group points of multiplicity points of order positive integers quadratic inversion remaining point respondence Ruffini Correspondences second solution semi-symmetric set of solutions simple basis points Thesis tiplicities triadic correspondences involving u2v+l