Nikolas Chuquet yɛ baara kɛ ni notation ekisiponansiyɛli sawura dɔ yɛ san 15 sigirɔyɔma kɛmɛ kɔnɔnana, min tilala ka labaara kɔfɛ tun Henricus Grammateus and Michael Stifel fɛ san 16 sigiyɔrɔma kɛmɛ kɔnɔnana.