Mathematical problem solving circuit comprising resistive elements

A mathematical problem solving circuit, comprising:

• a crosspoint matrix (MG;
• MGou) including a plurality of row conductors (Li), a plurality of column conductors (Cj;
• Couj) and a plurality of resistive elements (Gij;
• Xij) each connected between a row conductor and column conductor;
• and
• a plurality of operational amplifiers (OAi;
• OAouj), each having:
• a first input terminal (IN1i;
• “+”) connected to a respective row conductor (Li), a second input terminal (IN2i;
• “−”) connected to a ground terminal (GR) and an output terminal (OUi;
• OUPj) connected to a respective column;
• each operational amplifier (OAi;
• OAouj) of the plurality is in closed-loop configuration and comprises a respective output terminal (OUi;
• OUPj) connected to a respective column conductor (Cj;
• Couj) which is connected to the respective row conductor to perform the closed-loop configuration and being such to bring the respective first input terminal (IN1i;
• “+”) towards a virtual ground;
• wherein:
• the plurality of resistive elements represents, by respective conductance values (Gij;
• Xij), a first plurality of known values of a mathematical problem;
• at least one configurable electric quantity (Ii;
• λG0;
• Go) for representing at least one second known value of the mathematical problem is associated with the circuit;
• and
• the plurality of operational amplifiers (OAi;
• OAouj) defining from the respective output terminals a plurality of output voltages (Vi;
• wi) representative of a plurality of solution values of the mathematical problem;
• the circuit is configured so as that the plurality of output voltages (Vi;
• wi) representative of the plurality of solution values are assumed when said first input terminals (IN1i;
• “+”) assume the virtual ground.