Charles G PhD
@charlesgphd.bsky.social
#BlackandSTEM #BlackPhD #Morehouse #Commanders #skins, #graphtheory #math #mathsky #cs #compsci #compsky #programming
1 Corinthians 1:27a:
God chose what is foolish in the world to shame the wise;
I like to ask questions about things and call it research
1 Corinthians 1:27a:
God chose what is foolish in the world to shame the wise;
I like to ask questions about things and call it research
This is an oriented graph for the Seymour Second Neighborhood Conjecture #SSNC. Nodes are in "rooted neighborhoods". We see patterns, number of nodes in each neighborhood. #MathIsBeautiful
1->7
2->6
3->5
Second, number of cycles.
1->1
2->2
3->2 (can't have 3)
alphaxiv.org/abs/2501.00614
1->7
2->6
3->5
Second, number of cycles.
1->1
2->2
3->2 (can't have 3)
alphaxiv.org/abs/2501.00614
August 12, 2025 at 1:43 PM
This is an oriented graph for the Seymour Second Neighborhood Conjecture #SSNC. Nodes are in "rooted neighborhoods". We see patterns, number of nodes in each neighborhood. #MathIsBeautiful
1->7
2->6
3->5
Second, number of cycles.
1->1
2->2
3->2 (can't have 3)
alphaxiv.org/abs/2501.00614
1->7
2->6
3->5
Second, number of cycles.
1->1
2->2
3->2 (can't have 3)
alphaxiv.org/abs/2501.00614
I'm excited to share my #Math paper, alphaxiv.org/abs/2501.00614
It is my constructive #ProofByContradicton of the Seymour Second Neighborhood Conjecture, using #DataStructures and #Algorithms, #BFS and #coding intuition and rigor to #Research this #OpenProblem in #GraphTheory.
It is my constructive #ProofByContradicton of the Seymour Second Neighborhood Conjecture, using #DataStructures and #Algorithms, #BFS and #coding intuition and rigor to #Research this #OpenProblem in #GraphTheory.
August 7, 2025 at 2:26 PM
I'm excited to share my #Math paper, alphaxiv.org/abs/2501.00614
It is my constructive #ProofByContradicton of the Seymour Second Neighborhood Conjecture, using #DataStructures and #Algorithms, #BFS and #coding intuition and rigor to #Research this #OpenProblem in #GraphTheory.
It is my constructive #ProofByContradicton of the Seymour Second Neighborhood Conjecture, using #DataStructures and #Algorithms, #BFS and #coding intuition and rigor to #Research this #OpenProblem in #GraphTheory.
I'm excited to share my #Math paper, alphaxiv.org/abs/2501.00614
It is my constructive #ProofByContradicton of the Seymour Second Neighborhood Conjecture, using #DataStructures and #Algorithms, #BFS and #coding intuition and rigor to #Research this #OpenProblem in #GraphTheory.
It is my constructive #ProofByContradicton of the Seymour Second Neighborhood Conjecture, using #DataStructures and #Algorithms, #BFS and #coding intuition and rigor to #Research this #OpenProblem in #GraphTheory.
July 30, 2025 at 1:34 PM
I'm excited to share my #Math paper, alphaxiv.org/abs/2501.00614
It is my constructive #ProofByContradicton of the Seymour Second Neighborhood Conjecture, using #DataStructures and #Algorithms, #BFS and #coding intuition and rigor to #Research this #OpenProblem in #GraphTheory.
It is my constructive #ProofByContradicton of the Seymour Second Neighborhood Conjecture, using #DataStructures and #Algorithms, #BFS and #coding intuition and rigor to #Research this #OpenProblem in #GraphTheory.
I'm excited to share my latest #Math paper, alphaxiv.org/abs/2501.00614
It is my constructive #ProofByContradicton of the Seymour Second Neighborhood Conjecture, using #DataStructures and #Algorithms, #BFS and #coding intuition and rigor to solve this #OpenProblem in #GraphTheory.
It is my constructive #ProofByContradicton of the Seymour Second Neighborhood Conjecture, using #DataStructures and #Algorithms, #BFS and #coding intuition and rigor to solve this #OpenProblem in #GraphTheory.
July 24, 2025 at 12:21 PM
I'm excited to share my latest #Math paper, alphaxiv.org/abs/2501.00614
It is my constructive #ProofByContradicton of the Seymour Second Neighborhood Conjecture, using #DataStructures and #Algorithms, #BFS and #coding intuition and rigor to solve this #OpenProblem in #GraphTheory.
It is my constructive #ProofByContradicton of the Seymour Second Neighborhood Conjecture, using #DataStructures and #Algorithms, #BFS and #coding intuition and rigor to solve this #OpenProblem in #GraphTheory.
I'm excited to share my latest #Math paper, alphaxiv.org/abs/2501.00614
It is my constructive #ProofByContradicton of the Seymour Second Neighborhood Conjecture, using #DataStructures and #Algorithms, #BFS and #coding intuition and rigor to solve this #OpenProblem in #GraphTheory.
It is my constructive #ProofByContradicton of the Seymour Second Neighborhood Conjecture, using #DataStructures and #Algorithms, #BFS and #coding intuition and rigor to solve this #OpenProblem in #GraphTheory.
July 18, 2025 at 9:36 PM
I'm excited to share my latest #Math paper, alphaxiv.org/abs/2501.00614
It is my constructive #ProofByContradicton of the Seymour Second Neighborhood Conjecture, using #DataStructures and #Algorithms, #BFS and #coding intuition and rigor to solve this #OpenProblem in #GraphTheory.
It is my constructive #ProofByContradicton of the Seymour Second Neighborhood Conjecture, using #DataStructures and #Algorithms, #BFS and #coding intuition and rigor to solve this #OpenProblem in #GraphTheory.
I'm excited to share my latest #Math paper, alphaxiv.org/abs/2501.00614
It is my constructive #ProofByContradicton of the Seymour Second Neighborhood Conjecture, using #DataStructures and #Algorithms, #BFS and #coding intuition and rigor to solve this #OpenProblem in #GraphTheory.
It is my constructive #ProofByContradicton of the Seymour Second Neighborhood Conjecture, using #DataStructures and #Algorithms, #BFS and #coding intuition and rigor to solve this #OpenProblem in #GraphTheory.
July 12, 2025 at 1:53 AM
I'm excited to share my latest #Math paper, alphaxiv.org/abs/2501.00614
It is my constructive #ProofByContradicton of the Seymour Second Neighborhood Conjecture, using #DataStructures and #Algorithms, #BFS and #coding intuition and rigor to solve this #OpenProblem in #GraphTheory.
It is my constructive #ProofByContradicton of the Seymour Second Neighborhood Conjecture, using #DataStructures and #Algorithms, #BFS and #coding intuition and rigor to solve this #OpenProblem in #GraphTheory.
I'm excited to share my latest #Math paper, alphaxiv.org/abs/2501.00614
It is my constructive #ProofByContradicton of the Seymour Second Neighborhood Conjecture, using #DataStructures and #Algorithms, #BFS and #coding intuition and rigor to solve this #OpenProblem in #GraphTheory.
It is my constructive #ProofByContradicton of the Seymour Second Neighborhood Conjecture, using #DataStructures and #Algorithms, #BFS and #coding intuition and rigor to solve this #OpenProblem in #GraphTheory.
An Algorithmic Approach to Finding Degree-Doubling Nodes in Oriented Graphs | alphaXiv
View recent discussion. Abstract: The Seymour Second Neighborhood Conjecture (SSNC) claims that there will always exist a node whose out-degree doubles in the square of an oriented graph. In this pape...
alphaxiv.org
July 3, 2025 at 1:09 PM
I'm excited to share my latest #Math paper, alphaxiv.org/abs/2501.00614
It is my constructive #ProofByContradicton of the Seymour Second Neighborhood Conjecture, using #DataStructures and #Algorithms, #BFS and #coding intuition and rigor to solve this #OpenProblem in #GraphTheory.
It is my constructive #ProofByContradicton of the Seymour Second Neighborhood Conjecture, using #DataStructures and #Algorithms, #BFS and #coding intuition and rigor to solve this #OpenProblem in #GraphTheory.
My Biblical thought of the day, Jesus went through Samaria, a town that Jews would walk mikes to avoid. So after the Resurrection, did this continue? Did Christians like Paul continue looking for converts in Sameria?
June 1, 2025 at 4:06 PM
My Biblical thought of the day, Jesus went through Samaria, a town that Jews would walk mikes to avoid. So after the Resurrection, did this continue? Did Christians like Paul continue looking for converts in Sameria?
As a person with ADHD I thought Pinterest would be the thing that saved my life because I could put all those screenshots somewhere. But it's so confusing.
May 13, 2025 at 11:27 AM
As a person with ADHD I thought Pinterest would be the thing that saved my life because I could put all those screenshots somewhere. But it's so confusing.
Reposted by Charles G PhD
Reposted by Charles G PhD
Who bears the brunt of these cuts? Well, here's a word cloud of the most frequent terms from the titles and abstracts of terminated grants, with word size proportional to frequency:
April 30, 2025 at 10:55 PM
Who bears the brunt of these cuts? Well, here's a word cloud of the most frequent terms from the titles and abstracts of terminated grants, with word size proportional to frequency:
Reposted by Charles G PhD
UPDATE: We have data on >1000 terminated #NSF grants at grant-watch.us. Thanks to all who have been contributing data the past few days.
We've also added a "Reports" section with some analyses. For NSF, we see that the STEM education directorate has been absolutely pummeled.
We've also added a "Reports" section with some analyses. For NSF, we see that the STEM education directorate has been absolutely pummeled.
April 30, 2025 at 10:49 PM
UPDATE: We have data on >1000 terminated #NSF grants at grant-watch.us. Thanks to all who have been contributing data the past few days.
We've also added a "Reports" section with some analyses. For NSF, we see that the STEM education directorate has been absolutely pummeled.
We've also added a "Reports" section with some analyses. For NSF, we see that the STEM education directorate has been absolutely pummeled.
Reposted by Charles G PhD
Men kidnapped by the Trump regime spell out an SOS at the Bluebonnet ICE concentration camp.
May 1, 2025 at 12:13 AM
Men kidnapped by the Trump regime spell out an SOS at the Bluebonnet ICE concentration camp.
Reposted by Charles G PhD
A Pacers fan brought a free throw clock for Giannis 😂
April 23, 2025 at 12:09 AM
A Pacers fan brought a free throw clock for Giannis 😂
Reposted by Charles G PhD
"He don't need no music!"
Remembering Luther Vandross on his birthday 🕊️💙
(April 20, 1951 – July 1, 2005)
Remembering Luther Vandross on his birthday 🕊️💙
(April 20, 1951 – July 1, 2005)
April 20, 2025 at 5:46 PM
"He don't need no music!"
Remembering Luther Vandross on his birthday 🕊️💙
(April 20, 1951 – July 1, 2005)
Remembering Luther Vandross on his birthday 🕊️💙
(April 20, 1951 – July 1, 2005)
I want to add #PrincessBride quotes to a talk I'm giving. People are saying I shouldn't because the kids won't know the movie. I'm saying they should learn it. It's that important. Who's right? (It's me)
April 20, 2025 at 8:11 PM
I want to add #PrincessBride quotes to a talk I'm giving. People are saying I shouldn't because the kids won't know the movie. I'm saying they should learn it. It's that important. Who's right? (It's me)
Reposted by Charles G PhD
Why does adding a tip feel like taking an SAT
April 20, 2025 at 2:51 PM
Why does adding a tip feel like taking an SAT
I'm reading I Samuel and now I have the question, what does it mean when the Lord repents?
April 18, 2025 at 7:46 PM
I'm reading I Samuel and now I have the question, what does it mean when the Lord repents?
They say math is woke
April 17, 2025 at 12:31 PM
They say math is woke
Did he just threaten the Supreme Court
JUST IN: Deputy Assistant to the President and "Counterterrorism Czar" Sebastian Gorka says anyone advocating for due process for Kilmar Abrego Garcia could be viewed as "aiding and abetting a terrorist" and be federally charged. (h/t Philip Germain)
April 17, 2025 at 11:05 AM
Did he just threaten the Supreme Court
Reposted by Charles G PhD
#ArtistFave15
#MusicChallenge
2) No Ordinary Love
The seven minute lead single from Love Deluxe that feels like it should go on forever.
youtu.be/au8rHGvytn8?...
#MusicChallenge
2) No Ordinary Love
The seven minute lead single from Love Deluxe that feels like it should go on forever.
youtu.be/au8rHGvytn8?...
Sade - No Ordinary Love (Live 2011)
YouTube video by SadeVEVO
youtu.be
April 14, 2025 at 2:55 AM
#ArtistFave15
#MusicChallenge
2) No Ordinary Love
The seven minute lead single from Love Deluxe that feels like it should go on forever.
youtu.be/au8rHGvytn8?...
#MusicChallenge
2) No Ordinary Love
The seven minute lead single from Love Deluxe that feels like it should go on forever.
youtu.be/au8rHGvytn8?...
Day 20 of #SSNC facts! We're examining how standard #algorithms handle the #SeymourConjecture's. Remember, this #Conjecture seeks an #OrientedGraph whose second neighborhood is at least as large as its first. We last looked at Dijkstra. Today, Bellman-Ford. #ComputerScience #Math
April 8, 2025 at 11:57 AM
Day 20 of #SSNC facts! We're examining how standard #algorithms handle the #SeymourConjecture's. Remember, this #Conjecture seeks an #OrientedGraph whose second neighborhood is at least as large as its first. We last looked at Dijkstra. Today, Bellman-Ford. #ComputerScience #Math
Day 19 of #SSNC facts! We're exploring why the #SeymourConjecture remains unsolved. Today, we examine how #algorithms like #Dijkstra #Algorithm handle the challenge of neighborhood analysis. #math #mathematics #compSci #computerScience
April 6, 2025 at 7:05 PM
Day 19 of #SSNC facts! We're exploring why the #SeymourConjecture remains unsolved. Today, we examine how #algorithms like #Dijkstra #Algorithm handle the challenge of neighborhood analysis. #math #mathematics #compSci #computerScience
Day 18 of #SSNC facts! We're looking at the #SeymourConjecture: Does every #OrientedGraph have a node with a second neighborhood at least as large as its first? Can traditional #GraphTheory #Algorithms solve the neighborhood size challenge? Today, we examine #DepthFirstSearch (DFS). #Math
April 5, 2025 at 1:09 PM
Day 18 of #SSNC facts! We're looking at the #SeymourConjecture: Does every #OrientedGraph have a node with a second neighborhood at least as large as its first? Can traditional #GraphTheory #Algorithms solve the neighborhood size challenge? Today, we examine #DepthFirstSearch (DFS). #Math
How a problem about pigeons powers complexity theory
How a Problem About Pigeons Powers Complexity Theory | Quanta Magazine
When pigeons outnumber pigeonholes, some birds must double up. This obvious statement — and its inverse — have deep connections to many areas of math and computer science.
www.quantamagazine.org
April 5, 2025 at 12:48 PM
How a problem about pigeons powers complexity theory