Pith Number

pith:FQL3ABDP

pith:2020:FQL3ABDPT2JLX2ONHARCELXENL

not attested not anchored not stored refs pending

A generalisation of Seymour's second neighbourhood conjecture

Jeck Lim

arxiv:2001.07242 v1 · 2020-01-20 · math.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FQL3ABDPT2JLX2ONHARCELXENL}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Cited by

1 paper in Pith

A proof of Seymour's second neighborhood conjecture for oriented graphs with minimum out-degree equal to 7

Receipt and verification

First computed	2026-07-05T00:34:53.425962Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2c17b0046f9e92bbe9cd3822222ee46af45f5a93ef0cffb1d5f9e479ec63a1e0

Aliases

arxiv: 2001.07242 · arxiv_version: 2001.07242v1 · doi: 10.48550/arxiv.2001.07242 · pith_short_12: FQL3ABDPT2JL · pith_short_16: FQL3ABDPT2JLX2ON · pith_short_8: FQL3ABDP

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/FQL3ABDPT2JLX2ONHARCELXENL \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 2c17b0046f9e92bbe9cd3822222ee46af45f5a93ef0cffb1d5f9e479ec63a1e0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "29f836c021bd3e2248d9e2f6e854de74ab99e9aa4193bcd761affa9dfed89881",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2020-01-20T20:35:24Z",
    "title_canon_sha256": "e82d20649f3935a64fd033903d300e4f5b12710e2120433607bf82994ed66fcd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2001.07242",
    "kind": "arxiv",
    "version": 1
  }
}