Also in 1927 he gave a general law of reciprocity which included all previously known laws of reciprocity which had been discovered from the time that Gauss produced his first law.
Din sa 1927 siya ibinigay ng isang pangkalahatang batas ng katumbasan na kasama ang lahat ng dati na kilala na mga batas ng katumbasan na kung saan nagkaroon na natuklasan mula sa oras na gauss ginawa ang kanyang unang kautusan.