GAYZ Greek Letter Crossword

What is used to refer to the "first", or "primary", or "principal" (most significant) occurrence or status of a thing.
The Greek letter is especially used in finance, science, mathematics, statistics and typography.
This letter means "throwing stick"
This letter is the initial letter of the Greek word διαφορά diaphorá, "difference"
Comes from mathematics. an arbitrarily small quantity, used to indicate that a given quantity is small, or close to zero.
This letter means zeal, fervor, spirit.
What greek letter mean estimated time of arrival
This letter represents time constant and angular phase displacement.
What letter is used to denote definite descriptor in logic and it is also used in several different ways in mathematics and programming languages.
What greek letter is used to denote thermal conductivity, susceptibility and curvature in differential geometry
When you think of this letter it denotes the von Mangoldt function in mathematics while it can also be seen in areas such as physics, engineering, statistics and even astronomy.
This letter represents what many things in different scientific areas such as the Möbius function, the Ramanujan-Soldner constant, the learning rate in artificial neural networks, the friction coefficient and permeability in engineering.
What Greek letter represents kinematic viscosity and in statistics, it represents the degree of freedom.
This Greek letter is used to denote the Riemann Xi and Harish-Chandra functions and cascade particles among other things.
This letter has a special meaning of a asymptomatic growth of a function
This letter denotes the real transcendental constant pi, more commonly known as the pi number (3.14159…) in mathematics, economic profit in macroeconomics and osmotic pressure in chemistry among many other things throughout various scientific areas.
What letter represents coordinates, volume charge density, the prime constant and the Rho protein among many other things.
What letter means "sum up"
What letter represents the time constant, density, shear stress and sometimes the golden ratio as well as some other things in different areas.
What letter means “pure simply.”
This letter represents the golden ratio (which is about 1.618).
What Greek letter means cross, crosswise.
What Greek letter means "pure, divine power."
What letter means something very long, very large, extensive, but which has a beginning, middle and end.