Charles Edmond Alfred Riquier (19 November 1853, Amiens – 17 January 1929, Caen) was a French mathematician.Riquier matriculated in 1873 at the École Normale Supérieure (ENS) where he received his agrégé in mathematics in 1876. He taught from 1876 to 1878 at the Lycée de Brest and then from 1878 to 1886 at the Lycée de Caen and from 1886 to 1924 at the Université de Caen, where he retired as a professor emeritus.
After a brief leave of absence from the Lycée de Caen, Riquier received his doctorate in mathematics in 1886 from ENS at Paris with dissertation Extension à l’hyperespace de la méthode de M. Carl Neumann pour la résolution de problèmes relatifs aux fonctions de variables réelles à laplacien nul. His thesis committee consisted of Hermite (as chair), Darboux, and Picard.In 1910 he was awarded the Poncelet Prize. In 1920 he was elected to the French Academy of Sciences as the successor to Hieronymus Zeuthen. (Eugène Fabry was elected Riquier's successor in 1931.)
Riquier, Maurice Janet, Joseph Miller Thomas, Joseph Fels Ritt, and Ellis Kolchin were among the greatest pioneers of differential algebra and symbolic computation for systems of partial differential equations.
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Some of their strengths
Charles Riquier has many admirable traits.
Based on spiritual traditions from around the world, they are someone who can be described as Creative, Passionate, Intuitive, Imaginative, Compassionate, Loyal, and Bold.
Intense and Passionate
According to Mysticism’s Astrology tradition, Charles Riquier is someone who is an intense, passionate, and intuitive person who is fiercely independent, authentic and direct when engaging with others. A person who is charismatic and resourceful.
Constant and Serious
Based on Daoism’s Ba-Zi or ‘Chinese Zodiac’ tradition, people who know Charles Riquier well know them as someone who can be determined, unmoving, and firm, like a rock or a high mountain.
Ambitious and Forceful
According to Hinduism’s Jyotisha or ‘Vedic Astrology’ tradition, many would also describe Charles Riquier as someone who is ambitious, hard-working, determined, and intelligent.
A person who has a knack for identifying opportunities, has amazing concentration and focus, who can work independently, who likes starting new things, and who is somewhat of an intellectual.
Intelligent and Leadership-oriented
Based on the Mayan Tzolk’in or ‘Mayan Astrology’ tradition, Charles Riquier is someone who is able to see things that others don't, and who can be an effective guide or mentor to others.
They are also someone who is balanced, organized, and in-charge, and who loves traveling, working hard, and figuring out the patterns of things.
Mysterious and Methodical
According to Judaism’s Kabbalah tradition, Charles Riquier tends to be someone who can come across as mysterious and intense, who can be a complex thinker who is methodical and intuitive, and who can overcome challenges that most others would not be able to.
Some of Charles Riquier's challenges
While Charles Riquier has many strengths, nobody is perfect. They also have some challenging traits they need to manage.
For example, Charles Riquier can be Emotional, Aggressive, Complicated, Brusque, Standoffish, Relentless, and Inflexible.
Complicated and Brusque
One of Charles Riquier's key challenges is that they are someone who can be complicated and gruff with others.
Charles Riquier must also exercise caution as they can be short-tempered and aggressive, and can have difficulty dealing with responsibility, authority, or criticism.
Relentless and Inflexible
Charles Riquier is someone who can be relentless, obsessive, and inflexible, who can be confrontational with work colleagues, can have difficulty communicating feelings and be somewhat reclusive, and who can be self-destructive, overindulgent, and extravagant.
Sensitive and Aggressive
Finally, Charles Riquier also can be too "touchy-feely", have a hard time expressing feelings, be too aggressive and headstrong, and be too unforgiving of others' mistakes.
