Phone: 776-7223
E-Mail: geofhagop@gmail.com


Geoff Hagopian

Professor of Mathematics
College
of the Desert 


MA, Mathematics,
University of California at Davis, 1986

BA, Mathematics,
University of California at Santa Cruz, 1982

 

 

Fall 2007 Schedule 

 

time\day Monday Tuesday Wednesday Thursday Friday
7:45          
8:00--8:50 Math 2A Soc13
9:00--10 office time
10:15--11:20 Math 54 Elementary Algebra
  office time
11:45--12:50 Math 54 Elementary Algebra
4:15-5:15          
5:15-7:45   Math 5 Trigonometry   Math 5 Trigonometry  
 

 

 

Current Interests:

Symmetry

Riemann Hypothesis


Scientific Visualization: Sabbatical Proposal for 2005/6
Geometer's Sketchpad
Earth Systems Science

Play Algebra Arcade
Sabbatical Work

My report on AMS/MAA joint meetings attendance in New Orleans.

The theme of
Mathematics Awareness Month 2006
was
Mathematics and Internet Security
Past MAM Themes

My Userís Guide to the TI-85

TI-85Program Archive

Large Integers on the TI-85

22,976,221 - 1
is prime!
... and, as of November 17, 2003
we know

220,996,011 - 1

is also prime!
Join the Great Internet Mersenne Prime Search
 

Earth Statistics

Mass (kg)

5.976e+24

Mass (Earth = 1)

1.0000e+00

Equatorial radius (km)

6,378.14

Equatorial radius (Earth = 1)

1.0000e+00

Mean density (gm/cm^3)

5.515

Mean distance from the Sun (km) 

149,600,000

Mean distance from the Sun (Earth = 1)

1.0000

Rotational period (days)

0.99727 

Rotational period (hours)

23.9345

Orbital period (days)

365.256

Mean orbital velocity (km/sec)

29.79

Orbital eccentricity

0.0167

Tilt of axis (degrees)

23.45

Orbital inclination (degrees)

0.000

Equatorial escape velocity (km/sec)

11.18 

Equatorial surface gravity (m/sec^2)

9.78

Visual geometric albedo

0.37

Mean surface temperature

15įC

 

Atmospheric composition

Nitrogen 

77%

Oxygen

21%

Other

2%

 

 

 

 

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