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Klasyfikacja uogólnionych ognisk i uogólnionych kierownic stożkowych płaskich

Prętki C.

Materiały Seminarium Geometrii i Grafiki Inżynierskiej

1999

z. 7

43--46

This paper quotes author's definitions [1] and illustrates them with some drawings. Variability intervals for radii and centres of generalised foci and variability intervals for generalis.d di.".trices are given for two sets F and G of these concepts introduced for an łtp,. and a hyperbola and for its set F for a parabola The sets are divided into five and four subsets, respectively, according to the work [l]. (The division is justified by the drawing 4, quoted from the work [l], that suggests geometrical interpretation of these generalised concepts.)