I have been taking a deeper look at the Monomoiria through Dorian Greebaum's translation of Paulus & Olympiodorus and Robert Zoller's translation of Liber Hermetis.
As Ema Kurent article indicates there are several distinct kinds of Monomoiria used by the Hellenistic astrologers.
The first is based on the domicile ruler of the sign and proceeds following the Chaldean order of the planets. The second system is based on assigning each of the degrees to different triplicity rulers. However, as we shall see there are variations within that type of system
The first method is presented by Paulus in book 5 of his 'Introductory Matters' starts in each sign with the domicile ruler and continues following the Chaldean Order of the Planets. Thus the monomoiria of the first degree of Aries is Mars, while the second is the Sun since this is the next planet after Mars in Chaldean order. The sequence of planets then continues in Chaldean order until the end of the sign.
Because of joint rulership of the signs the sequence of monmoiria is identical for Aries/Scorpio, Taurus/Libra, Gemini/Virgo, Sagittarius/Pisces and Capricorn/Aquarius.
For anyone not familiar with the Chaldean order of planets here is the sequence: Saturn, Jupiter, Mars, Sun, Venus, Mercury, Moon. It reflects the visible planets as held to have been proposed by the ancient Babylonian astrologers. This reflects their position in the Celestial planetary spheres (Saturn in the outermost and Moon in the innermost). From a modern perspective, the order expresses the relative speed of the planets, from slowest to fastest.
Those familiar with planetary hour rulers will be conversant with this approach. As Ema Kurent indicates this system is quite straightfoward and logical. There is also no ambiguity connected to this system of Monomoiria unlike the triplicity ruler based systems.
I have already been looking at lots of charts with these monomoiria and I am very impressed at the initial results and intend to explore this further. I am not sure if it is consistent with hellenistic practice but I have also had a look at the Monomoiria on angles and they seem quite revealing.
The Triplicity system of Monomoria is another matter entirely. These are presented by Paulus in chapter 32 of the 'Introductory Matters' and in chapter 34 of the Commentary on Paulus Alexandrinus by Olympiodorus. First of all lets recap that the system of trigon or triplicity rulers in discussion here is the system of Dorotheus of Sidon outlined in his work the 'Carmen Astrologicum'. This was the triplicity system used by nearly all the hellenistic astrologers (excluding Ptolemy), and by later Arab and medieval astrologers. It differs from the system attributed to Ptolemy and used by early modern astrologers like William Lilly. Paulus lists the Trigon (Triplicity) in the following order:
Trigon (Triplicity) 1 ( Fire) Sun/Jupiter
Trigon (Triplicity) 2 (Earth) Venus/Moon
Trigon ( Triplicity) 3 (Air) Saturn/Mercury
Trigon (Triplicity) 4 (Water) Venus/Mars
Note: Diurnal triplicity ruler first/Nocturnal triplicity ruler second
Dorian Greenbaum explains the difficulties in establishing the trigonal monomoiria in her translation:
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?Though the reasoning how each trigonal monomoiria is determined seems clear in the text, the tables are another story completely. Both Paulus and Olympiodurs texts have more than one table to accompany this chapter, and the tables in both texts often have planets missing , do not follow the reasoning of the text , or are just plain filled with errors. The table presented above seems closet to the reasoning of the text , though there could be another interpretation of the order of the planets??.
Greenbaum then explains an alternative possibility of arranging the table before outlining what she thinks is the most plausible arrangment. To keep things reasonably manageable here I will only include the main criteria Greenbaum lists for determining the Monomoria by Trigon.
??1 Use the sect Lords, beginning with the diurnal lord for the day chart , the nocturnal one for the night.
2 Begin rulership of each trigon from its appropriate sect lords.
3 The diurnal lord rules the 1st degree in the diurnal chart; the nocturnal lord rules the 1st degree in a nocturnal chart. The second degree will reverse this order ; that is, the nocturnal lord rules the 2nd degree in a diurnal chart, the diurnal lord rules the 2nd degree in a nocturnal chart.
4 There are always pairs of degrees, the second degree reversing the order of the first; thus 15 pairs for the 30 degrees.
5 Do not give a planet rulership of another diurnal degree in the trigon until all the other planets have been used. In practice , this applies to Venus, the diurnal ruler of both the 2nd and 4th trigons.
6 In placing nocturnal rulers, we must be consistent about rulr 4: using pairs of degrees , thus pairs of planets, and reversing the order of them.
In regard to this last rule, something very interesting happens. Because we are consistent with rule 5, in not assigning a planet to the second degree until all the others have been used , we find that the nocturnal rulers of the first 7 degrees do repeat a planet, which is always the diurnal lord of the trigon. The nocturnal rulers of the second set of 7 degrees have a repeat planet which is the nocturnal ruler of the previous trigon. The nocturnal rulers of the third set of 7 degrees again repeat with the diurnal lord of the trigon, and the fourth set again doubles the planet which is the nocturnal ruler of the previous trigon. The last two degrees are always diurnal and nocturnal lords of the trigon.??
As if the confusion of the trigon monomoiria in Paulus and Olympiodurus were not hard enough to deal with we find another variation presented in Liber Hermetis.
This is found in book XXXV entitled ?On the Virtues of The Triplicities and Years of Life?
Rober Zoller in his introduction to the chapter comments:
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First of all it presents a system of monomoiria , that is individual degree triplicity rulerships. It is similar to the second of the two degree-rulership systems presented in Paulus Alexandrinus but it is different in one respect. In the Paulus system the degree rulerships alternate according to whether the chart is day or night. In the system here the rulerships are the same both night and day and depend instead on the sect of the triplicities. The first degree of any sign is ruled by the triplicity ruler that is of the same sect as the triplicitty, followed by the ruler from the other sect. The third degree is ruled by the ruler of the next triplicity according to that triplicity?s sect. the fourth is ruled by the other sect ruler of that triplicity, and so forth. No ruler is used twice , like the Paulus system. If the earth triplicity rulers come up first, then Venus is used with earth. If water comes up first, then Venus is used as a water ruler. For example in Leo, the first degree would be of the Sun, then Jupiter, these being the diurnal and nocturnal rulers, respectively of that triplicity. The next two degrees would be ruled by the Moon and Venus, the next two by Saturn and Mercury, and then a Mars degree. The sequence then repeats itself at the end of Leo.??
( Liber Hermetis, Hermes Trismegistus, translated by Robert Zoller, p71)
Zoller considers the unique aspect of the monomoiria presented in Liber Hermetis is that they are used to compute life expectancies based on the position and periods of the rulers of the degrees. In particular Zoller states the system outlined is one of the degrees of monomoiria ruling the degree of the Part of Fortune. The ruler of that degree gives its planetary period to the life of the native according to where that ruler is, in the chart.
So from my initial look at this we seem to have four options here:
1 The first system of monomoiria outlined by Paulus using domicile ruler/chaldean order of the planets
2/3 The second system of monomoiria presented by Paulus and Olympiodorus. Greenbaum believes the confusion in the text means there is two alternative ways to arrange the Trigon rulers
4 The system presented in Liber Hermetis