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pop quiz
What have we got here?
(a) nobody gives a damn, Lisa;
(b) phase portraits of quadratic polynomial vector fields;
(c) phase portraits of polynomially quadratic field vectors;
(d) quadratic vector portraits of topologically insignificant vector phase fields.
Anybody?
(a) nobody gives a damn, Lisa;
(b) phase portraits of quadratic polynomial vector fields;
(c) phase portraits of polynomially quadratic field vectors;
(d) quadratic vector portraits of topologically insignificant vector phase fields.
Anybody?