akwai wasu yunkuri don samo Lorentz canzawa ba tare da postulate na daidaito na gudun haske. Vladimir Ignatowski (1910) misali amfani da wannan manufa (a) da manufa na dangi, (b) homogeneity da isotropy sarari, da (c) da ake bukata na reciprocity. Philipp Frank da Hermann Rothe (1911) jayayya cewa wannan samuwar ne bai cika ba, kuma yana bukatar ƙarin assumptions. nasu lissafi da aka dogara ne a kan assumptions cewa: (a) da Lorentz canzawa siffofi a homogeneous mikakke kungiyar, (b) lokacin da canza Frames, kawai da alamar da dangi gudun canje-canje, (c) contraction dogara ne kawai a kan dangi gudun. Duk da haka, bisa ga Pauli da Miller sun kasance kasawa model gano irin wannan invariable a cikin gudun da suke da tare da gudun haske. Ignatowski misali ya ci gaba da yin amfani da su ba tare da dangi, har sai da Vladimir Pauli da sauransu aka tilasta yin amfani da su a yau.
ka'idar dangi, (b) homogeneity da isotropy na sarari, da (c) da ake bukata na reciprocity