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

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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

Geoff Hagopian's College of the Desert Web Site

There’s an old debate about whether you create mathematics or just discover it. In other words, are the truths already there even if we don’t yet know them?
—Paul Erdös

Fall 2010 Schedule

Time
Monday
Tuesday
Wednesday
Thursday
8:00 - 9:10
9:10 - 11:00
office (M12)
office (M12)
11:00 - 12:10
12:30 - 1:50
Math 30   Geometry   Section #3398 CSSC 125
Math 30 Geometry   Section #3398 CSSC 125
5:15 - 7:45
Math 5 Trigonometry Section #3328 CSSC 125
Math 5 Trigonometry Section #3328
CSSC 125

 

Current Interests:

 

Free Open Source Software and R

Video Lectures

Symmetry

Riemann Hypothesis
Intermediate Algebra Related Stuf
SLOs Controversy
Scientific Visualization: Sabbatical Proposal for 2005/6
Geometer's Sketchpad
Earth Systems Science

Play Algebra Arcade
Sabbatical Work

Scooping the Loop Snooper

My report on AMS/MAA joint meetings attendance in New Orleans, 2004.
| My report on CMC3 conference in Monterey, December 2008.
Review of Time Magazine article about community colleges

The theme of
Mathematics Awareness Month 2010 is Sports

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

My User’s 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
 

dogs

 

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

15°C

 

Atmospheric composition

Nitrogen 

77%

Oxygen

21%

Other

2%

 

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© Geoff Hagopian 2010