Ƙirƙiri wani nau'i mai mahimmanci na wannan jumla Ƙididdigar lambobi (ko lissafi Musamman a cikin tsofaffin tushe; duba bayanan bayanan biyu masu zuwa. ) wani reshe ne na ilimin lissafi mai tsabta wanda aka keɓe musamman ga nazarin lambobi.
Tabbas, wani nau'i mai rikitarwa na jumla shine "Ka'idar lambobi (ko lissafi Musamman a cikin tsofaffin tushe; duba bayanan bayanan biyu masu zuwa.) reshe ne na ilimin lissafi mai tsabta wanda aka keɓe musamman don nazarin lambobi, wani lokacin ana kiransa'' Sarauniyar ilimin lissafi'' saboda matsayinta na tushe a cikin horo. "