Phocus
Phocus (; Ancient Greek: Φῶκος means "seal"[1]) was the name of the eponymous hero of Phocis in Greek mythology.[2] Ancient sources relate of more than one figure of this name, and of these at least two are explicitly said to have had Phocis named after them. Phocus is also the name of the son of Phocion. Notes[edit] References[edit]
Perseus
Ancient Greek hero and founder of Mycenae Etymology[edit] Because of the obscurity of the name "Perseus" and the legendary character of its bearer, most etymologists presume that it might be pre-Greek; however, the name of Perseus' native city was Greek and so were the names of his wife and relatives. There is some idea that it descended into Greek from the Proto-Indo-European language. In that regard Robert Graves has proposed the only Greek derivation available. The further origin of perth- is more obscure. Mythology[edit] Origin at Argos[edit] Perseus was the son of Zeus and Danaë, the daughter of Acrisius, King of Argos. Fearful for his future, but unwilling to provoke the wrath of the gods by killing the offspring of Zeus and his daughter, Acrisius cast the two into the sea in a wooden chest.[7] Danaë's fearful prayer, made while afloat in the darkness, has been expressed by the poet Simonides of Ceos. Overcoming the Gorgon[edit] Marriage to Andromeda[edit] Oracle fulfilled[edit]
Mathematical symbols list (+,-,x,/,=,<,>,...)
List of all mathematical symbols and signs - meaning and examples. Basic math symbols Geometry symbols Algebra symbols Linear Algebra Symbols Probability and statistics symbols Combinatorics Symbols Set theory symbols Logic symbols Calculus & analysis symbols Numeral symbols Greek alphabet letters Roman numerals See also Write how to improve this page
Thyni
The Thyni (Greek: Θυνοί) were a Thracian tribe that lived in south-eastern Thrace, later they, along with the Bithyni, migrated to the lands that would later be known as Thynia and Bithynia. Each respective region got its name, presumably, from the Thracian tribe that was more prominent in the area. Xenophon (Anabasis VII, 2) praises the Thyni: "Teres, with a large army, was said to have had his baggage train taken from him by the natives, who are called Thyni and are supposed to be the most dangerous of all the tribes, especially at night fighting." The Thyni included clubs amongst their weapons. Approximate location of the Thyni
Phineus
Phineus was a king of the region of Thrace in Greek mythology, as well as a seer. He appeared in the myth of Jason and the Argonauts, on their way to retrieve the Golden Fleece from the mythical land of Colchis. There are various accounts as to who his parents may have been; some attribute Agenor or Poseidon as his father, while others say he was the child of Phoenix and Cassiopeia. He was initially married to Cleopatra, while later he married Idaea. According to different sources, he was blinded, an event that happened as a punishment for either blinding his own sons; giving Phrixus directions; or revealing the future to mankind. See Also: Jason, Argonauts, Golden Fleece, Phrixus, Harpies, Iris
Picus
One of the functions he performed was to lead the deduction of colonies (made up of younger generation folk) with his flight, which traditionally took place in spring and was performed according to a religious ritual known as ver sacrum. The people of the Piceni derived their name from the memory of this ritual. Notes[edit] ^ Aug. References[edit] Further reading[edit]
Athamas
Greek mythological figure In Greek mythology, Athamas () was a Boeotian king.[1] Family[edit] Mythology[edit] Tisiphone maddens Athamas & Ino (17th century) Phrixus and Helle were hated by their stepmother, Ino. Later, Ino raised Dionysus, her nephew, son of her sister Semele, causing Hera's intense jealousy. Athamas, with the guilt of his son's murder upon him, was obliged to flee from Boeotia. According to some accounts, Athamas was succeeded on the throne by Presbon.[6] A part of Kingdom of Athamas, and himself, moved west north and took roots in a part of Pindus mountains in Epirus, called Athamanean mountains. Gallery[edit] Atamante preso dalle Furie by Arcangelo Migliarini (1801) at Roma, Accademia di San Luca Athamas tue le fils d'Ino by Gaetano Gandolfi (1801) Notes[edit] References[edit] External links[edit] Images of Athamas and Ino in the Warburg Institute Iconographic Database
Extraneous and missing solutions
In mathematics, an extraneous solution (or spurious solution) is a solution, such as that to an equation, that emerges from the process of solving the problem but is not a valid solution to the problem.[1] A missing solution is a solution that is a valid solution to the problem, but disappeared during the process of solving the problem. Both are frequently the consequence of performing operations that are not invertible for some or all values of the variables, which prevents the chain of logical implications in the proof from being bidirectional. Extraneous solutions: multiplication[edit] One of the basic principles of algebra is that one can multiply both sides of an equation by the same expression without changing the equation's solutions. If we multiply both sides by zero, we get, This is true for all values of x, so the solution set is all real numbers. More subtly, suppose we take the same equation and multiply both sides by x. This quadratic equation has two solutions, − 2 and 0. .
Harpy
In Greek mythology and Roman mythology, a harpy (plural harpies, Greek: ἅρπυια,[1][2] harpyia, pronounced [hárpyi̯a]; Latin: harpȳia) is a half-human and half-bird personification of storm winds. They feature in Homeric poems.[3] Descriptions[edit] They were generally depicted as birds with the heads of maidens, faces pale with hunger and long claws on their hands. Hesiod[edit] To Hesiod, they were imagined as fair-locked and winged maidens, who surpassed winds and birds in the rapidity of their flight. "...the Harpyiai (Harpies) of the lovely hair, Okypete (Ocypete) and Aello, and these two in the speed of their wings keep pace with the blowing winds, or birds in flight, as they soar and swoop, high aloft Aeschylus[edit] But even as early as the time of Aeschylus, they are described as ugly creatures with wings, and later writers carry their notions of the harpies so far as to represent them as most disgusting monsters. Virgil[edit] Hyginus[edit] Functions and abodes[edit] Mythology[edit]