  The origin of the numerals that we inherited from the arabo-Islamic
civilization remained one enigma. The hypothesis of the Indian origin remained,
with controversies, without serious rival. It was the dominant hypothesis since
more of one century. Its partisans found to it and constructed a lot of
arguments. The testimonies of the medieval authors have been interpreted to its
advantage. The opposite opinions have been dismissed and ignored. An amalgam
between the history of our modern numerals and the Indian mathematics history
is made. Rational contradictions often passed under silence. A meticulous
observation of the numerals permits to affirm that our numerals are in fact
more or less modified Arabic letters. The "Ghubari" shape of the numerals shows
that the symbol of a numeral corresponds to the Arabic letter whose numerical
value is equal to this numeral. The numerals don't have a simple resemblance
with some Arabic letters, but every number looks like the Arabic letter whose
numerical value is equal to this numeral. The elements of the ''Abjadi''
calculation gives us a theoretical support, independent of the letters and
numerals, witch explains our observation. Besides a re-lecture of the
testimonies of the medieval authors, particularly the testimony of Al-Biruni,
that is probably at the origin of all others testimonies speaking of the Indian
origin of the numerals, is in agreement with the fact that our numerals are
Arabic letters. We have there a second way concerning the origin of our modern
numerals that is only to its beginnings. The deepened researches are necessary
to understand the history of our numerals better. A rigorous re-lecture of the
medieval testimonies with a new mind imposes itself.
