Joe Z.

less info

network profile

2,824 reputation

1517

bio	website	joezeng.com
	location
	age	19
visits	member for	1 year, 3 months
	seen	Apr 29 at 15:26
stats	profile views	281

summary answers questions tags badges favorites bounties reputation activity

15 Favorites

added views newest activity votes

3

8

votes

2

answers

292

views

Infinite Series: Fibonacci/ $2^n$

sequences-and-series teaching fibonacci-numbers

feb 29 '12 at 13:33 Ragib Zaman 17.8k

7

15

votes

5

answers

465

views

Prove that line through intersection of line through foots of heights and opposite line and orthocenter is perpendicular to median.

geometry

mar 21 at 20:45 zyx 10.9k

5

9

votes

1

answer

785

views

The Ellipse Problem - finding an ellipse inside a triangle

geometry conic-sections triangle

apr 5 '12 at 16:02 Andrew MacFie 58

102

176

votes

23

answers

7

kviews

Examples of apparent patterns that eventually fail

big-list examples-counterexamples

apr 10 at 3:04 Douglas B. Staple 1,014

3

12

votes

3

answers

163

views

What is the order of $2$ in $(\mathbb{Z}/n\mathbb{Z})^\times$?

group-theory elementary-number-theory finite-groups

mar 13 at 20:02 zero-divisor 215

166

266

votes

115

answers

13

kviews

What was the first bit of mathematics that made you realize that math is beautiful? (For children's book)

soft-question recreational-mathematics education big-list teaching

may 6 at 4:59 Jori Mäntysalo 31

2

6

votes

1

answer

200

views

Solutions of $p!q! = r!$

number-theory

may 27 '12 at 0:51 MJD 20.8k

1

9

votes

7

answers

313

views

Is $\forall x\,\exists y\, Q(x, y)$ the same as $\exists y\,\forall x\,Q(x, y)$?

logic quantifiers

feb 15 at 19:01 Zarrax 19.7k

3

7

votes

3

answers

286

views

Implies vs. Entails vs. Provable

logic

feb 16 at 9:35 Peter Smith 11.5k

21

40

votes

13

answers

2

kviews

Pseudo Proofs that are intuitively reasonable

proof-strategy big-list

dec 8 at 21:02 Elias 2,858

45

101

votes

23

answers

5

kviews

Can't argue with success? Looking for “bad math” that “gets away with it”

examples-counterexamples

apr 3 at 15:45 Inceptio 4,645

29

131

votes

19

answers

4

kviews

Why don't we define “imaginary” numbers for every “impossibility”?

soft-question

dec 21 at 3:57 bibo 1

1

0

votes

1

answer

69

views

Finding a distribution from a many combinations of distributions

statistics probability-theory

dec 17 at 5:28 User1900 26

103

206

votes

33

answers

17

kviews

Do complex numbers really exist?

soft-question complex-numbers teaching philosophy

may 5 at 4:54 l19 115

4

10

votes

2

answers

169

views

Is it possible to construct an ordered field which is also algebraically closed?

abstract-algebra field-theory complex-numbers order-theory

nov 25 '11 at 7:01 Martin Sleziak 20.3k

Technology			Life / Arts	Culture / Recreation	Science	Other
Stack Overflow Server Fault Super User Web Applications Ask Ubuntu Webmasters Game Development TeX - LaTeX	Programmers Unix & Linux Ask Different (Apple) WordPress Answers Geographic Information Systems Electrical Engineering Android Enthusiasts IT Security	Database Administrators Drupal Answers SharePoint User Experience Mathematica more (14)	Photography Science Fiction & Fantasy Seasoned Advice (cooking) Home Improvement more (13)	English Language & Usage Skeptics Mi Yodeya (Judaism) Travel Arqade (gaming) Bicycles Role-playing Games more (22)	Mathematics Cross Validated (stats) Theoretical Computer Science Physics more (7)	Stack Apps Meta Stack Overflow Area 51 Stack Overflow Careers

site design / logo © 2013 stack exchange inc; user contributions licensed under cc-wiki with attribution required

rev 2013.5.21.692