GÖTTINGEN COLLECTION

of Mathematical Models and Instruments

An algebraic surface of higher order n in real 3-dimensional space is the set of zeros of a polynomial in 3 variables of degree n>3. The surfaces 123-125 are Kummer surfaces named after the Berlin mathematician (1810-1893). They are of order 4 and have 16 not necessarily real double points. The surfaces 126-131 are made by Kummer. The cyclides (models 153-162) are algebraic surfaces of order 4. They are also of interest in differential geometry.