Overview "Problem" (166 entries)

• ➔ Problem: construct the geometric mean of two positive segments a and b
• ➔ Problem: construct the internal bisector of a given angle at vertex A
• ➔ Problem: construct the midpoint of a given segment AB
• ➔ Problem: construct the nine-point circle of a triangle
• ➔ Problem: construct the perpendicular bisector of a given segment AB
• ➔ Problem: construct the regular 17-gon
• ➔ Problem: construct the three excenters and excircles of a triangle
• ➔ Problem: copy a given segment length onto a given ray
• ➔ Problem: copy an angle onto a given vertex and initial side
• ➔ Problem: Count or enumerate integer lattice points in a convex polytope
• ➔ Problem: decide whether a regular n-gon is classically constructible (Gauss-Wantzel)
• ➔ Problem: divide a segment AB internally in a given ratio m:n
• ➔ Problem: Estimation of attenuation (Q) effects in inversion (proposed)
• ➔ Problem: Estimation of elastic properties (P-impedance, S-impedance, density) from pre-stack seismic data
• ➔ Problem: Estimation of VTI anisotropy parameters from reflection data (proposed)