Pith Number

pith:RYGIDNTL

pith:2017:RYGIDNTL3Y3VDYCAIZLNPAAOX3

not attested not anchored not stored refs pending

Seymour's second neighbourhood conjecture for quasi-transitive oriented graphs

Gregory Gutin, Ruijuan Li

arxiv:1704.01389 v2 · 2017-04-05 · cs.DM · 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{RYGIDNTL3Y3VDYCAIZLNPAAOX3}

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.

Receipt and verification

First computed	2026-05-18T00:30:17.034814Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8e0c81b66bde3751e0404656d7800ebed10ba367c0feeda6e567d67c1798b960

Aliases

arxiv: 1704.01389 · arxiv_version: 1704.01389v2 · doi: 10.48550/arxiv.1704.01389 · pith_short_12: RYGIDNTL3Y3V · pith_short_16: RYGIDNTL3Y3VDYCA · pith_short_8: RYGIDNTL

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/RYGIDNTL3Y3VDYCAIZLNPAAOX3 \
  | 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: 8e0c81b66bde3751e0404656d7800ebed10ba367c0feeda6e567d67c1798b960

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "435bd5f9fdbda1370ad0ad2cc3d8d95149641927f11e2be94f2535cfe6b4fe72",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2017-04-05T12:51:58Z",
    "title_canon_sha256": "db66bb3e54904151d546630a87e06875063550875ba1d4d1bc6b175bae594b57"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1704.01389",
    "kind": "arxiv",
    "version": 2
  }
}