3 d wallpapers

Non-standard positional numeral systems: The value of the digit string d_3d_2d_1d_0 given by the polynomial form can be simplified into d_3+d_2+d_1+d_0 since b^n 1 for all n. ...

Quater-imaginary base: Converting from quater-imaginary !: cdots + d_3\cdot b^3+d_2\cdot b^2+d_1\cdot b+d_0 For the quater-imaginary system, b 2i. Example ...

Plato's number: begin align& (ax^2-v_1xy+by^2)^3 + (bx^2+v_1xy+ay^2)^3 \& + (cx^2+v_2xy+dy^2)^3 + (dx^2-v_2xy+cy^2)^3 \& (a^3+b^3+c^3+d^3)(x^2+v_3y^2)^3 ...

Peter Fimmel Extended Nuclear Cluster model: Neutron capture by the isotopes of hydrogen and helium: 11-Be | 3+d | 1n halo | 12Be | 4 | 13-Be | 4+n | 14-Be 4+2n | 2n halo | ...