Germany, Austria, Hungary and Bulgaria could not be members under the terms of the International Research Council. Levi-Civita was opposed to such ideas as he made clear in a letter he wrote to Sommerfeld in 1920:
Alemanya, Austria, Hungary at Bulgaria ay hindi kasapi sa ilalim ng mga termino ng International Research Council. Levi-Civita ay laban sa gayong mga ideya na siya sa malinaw na ginawa ng isang sulat wrote siya sa Sommerfeld sa 1920: