Cassini grid

Target entity: Cassini grid
Context triple: [OS National Grid, replaced, Cassini grid]

• A. Schwarz–Christoffel mapping
  The Schwarz–Christoffel mapping is a conformal transformation that maps the upper half-plane (or unit disk) onto polygonal regions, playing a central role in complex analysis and applications such as fluid dynamics and electrostatics.
• B. Lissajous curve
  A Lissajous curve is a complex, looping figure traced by combining two perpendicular harmonic motions, often visualized on an oscilloscope.
• C. Fermat's spiral
  Fermat's spiral is a plane curve whose radius grows with the square root of the angle, often used to model naturally occurring spiral patterns such as those in sunflowers and other phyllotactic arrangements.
• D. Mandelbrot set
  The Mandelbrot set is a famous complex-plane fractal defined by iterating quadratic polynomials, known for its infinitely intricate boundary and iconic role in chaos theory and complex dynamics.
• E. Ulam spiral
  The Ulam spiral is a graphical arrangement of the positive integers in a spiral pattern that reveals striking diagonal alignments of prime numbers, suggesting unexpected structure in their distribution.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Target entity: Cassini grid
Target entity description: The Cassini grid was an early British national mapping coordinate system used before the adoption of the modern Ordnance Survey National Grid.

• A. Schwarz–Christoffel mapping
  The Schwarz–Christoffel mapping is a conformal transformation that maps the upper half-plane (or unit disk) onto polygonal regions, playing a central role in complex analysis and applications such as fluid dynamics and electrostatics.
• B. Lissajous curve
  A Lissajous curve is a complex, looping figure traced by combining two perpendicular harmonic motions, often visualized on an oscilloscope.
• C. Fermat's spiral
  Fermat's spiral is a plane curve whose radius grows with the square root of the angle, often used to model naturally occurring spiral patterns such as those in sunflowers and other phyllotactic arrangements.
• D. Mandelbrot set
  The Mandelbrot set is a famous complex-plane fractal defined by iterating quadratic polynomials, known for its infinitely intricate boundary and iconic role in chaos theory and complex dynamics.
• E. Ulam spiral
  The Ulam spiral is a graphical arrangement of the positive integers in a spiral pattern that reveals striking diagonal alignments of prime numbers, suggesting unexpected structure in their distribution.
• F. None of above. chosen