• The system of complex numbers can be defined rigorously .
• Neither set of equations can be solved rigorously .
• These spectra are difficult to interpret rigorously .
• The system of complex numbers can be defined rigorously .
• Neither set of equations can be solved rigorously .
• These spectra are difficult to interpret rigorously .
Циммерман М., Веденеева К.. Русско-Английский научно-технический словарь переводчика. Russian-English scientific dictionary for translators. 2012