Śūnya, [43], [53], [57]

Suter, [5], [9], [68], [69], [93], [116], [131]

Sūtras, [13]

Sykes, P. M., [75]

Sylvester II, see Gerbert

Symonds, J. A., [129]

Tannery, P., [62], [84], [85]

Tartaglia, [4], [61]

Taylor, I., [19], [30]

Teca, [55], [61]