Open Problem Garden
Help
About
Contact
login/create account
Home
»
configure
brenton
view
track
contact
Type
Post
Author
Replies
Last post
Open problem
The 3n+1 conjecture
dododododo
4
12 years 6 days ago
Navigate
Subject
Algebra
(298)
Analysis
(5)
Combinatorics
(35)
Geometry
(29)
Graph Theory
(228)
Group Theory
(5)
Logic
(10)
Number Theory
(49)
PDEs
(0)
Probability
(1)
Theoretical Comp. Sci.
(13)
Topology
(40)
Unsorted
(1)
Author index
Keyword index
more
Recent Activity
Is Dragon Ball Legends Safe? Account Security Guide — Avoid Bans, Scams & Hacks (2026)
Dragon Ball Legends PvP Team Building Guide — Tags, Synergy & Win Conditions (2026)
Dragon Ball Legends Free Chrono Crystals — Legit Methods That Actually Work (2026)
Dragon Ball Legends Free Chrono Crystals — Legit Methods That Actually Work (2026)
Nowhere-zero flows
more
login/create account
Drupal
CSI of Charles University