Revision history of "an empty string is not a natural number" (Z13498)

𑄓𑄨𑄜𑄢𑄬𑄚𑄴𑄑𑄴 𑄥𑄨𑄣𑄬𑄇𑄴𑄥𑄧𑄚𑄴: 𑄡𑄬 𑄞𑄢𑄴𑄥𑄧𑄚𑄪𑄚𑄮𑄢𑄴 𑄇𑄧𑄟𑄴𑄛𑄬𑄠𑄢𑄴 𑄉𑄧𑄢𑄨𑄝𑄢𑄴 𑄥𑄧𑄢𑄴, 𑄥𑄨𑄉𑄪𑄚𑄴 𑄟𑄢𑄴𑄇𑄴 𑄉𑄧𑄢𑄨 𑄃𑄬𑄚𑄴𑄑𑄢𑄴 𑄃𑅅 𑄖𑄧𑄣𑄬𑄘𑄨 𑄝𑄮𑄖𑄟𑄴𑄝𑄮 𑄌𑄨𑄛𑄴𑅁
𑄃𑄨𑄚𑄴𑄃𑄬𑄥𑄴𑄑𑄳𑄢𑄇𑄴𑄥𑄧𑄚𑄴: (𑄃𑄨𑄢𑄪𑄇𑄴) = 𑄃𑄨𑄢𑄪𑄇𑄴 𑄞𑄢𑄴𑄥𑄧𑄚𑄧𑄢𑄴 𑄥𑄧𑄟𑄢𑄬 𑄜𑄢𑄧𑄇𑄴, (𑄃𑄊𑄬𑄚𑄴𑄘𑄨) = 𑄃𑄊𑄧𑄢𑄴 𑄞𑄢𑄴𑄥𑄧𑄚𑄧𑄢𑄴 𑄥𑄧𑄟𑄢𑄬 𑄜𑄢𑄧𑄇𑄴, m = 𑄃𑄨𑄖𑄴𑄪𑄇𑄴 𑄥𑄮𑄢𑄴𑄉𑄮𑄌𑄴𑄬𑅁