Translation of "demonstrability" into Spanish

Let me explain. The principle of analytical demonstrability in the end product has been abandoned.

Lo explico: El principio de la demostrabilidad analítica en el producto final no se regula.

A formal demonstration of Peter's principle would be a hit to the corporativist structures of many countries.

Una demostración formal del principio de Peter daría un golpe a las estructuras corporativistas de muchos países.

The second has been its demonstrated ability to launch, develop and manage umbrella programmes to attract donor financing.

El segundo ha sido su probada capacidad para emprender, formular y gestionar programas generales para captar la financiación de los donantes.