Pith Number

pith:6DE6EEWT

pith:2013:6DE6EEWT6ARJOVU6BCF2FOPP3R

not attested not anchored not stored refs pending

A structure theorem for graphs with no cycle with a unique chord and its consequences

Kristina Vu\v{s}kovi\'c, Nicolas Trotignon

arxiv:1309.0979 v1 · 2013-09-04 · 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{6DE6EEWT6ARJOVU6BCF2FOPP3R}

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	2026-05-18T01:18:19.641024Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f0c9e212d3f02297569e088ba2b9efdc61c7e7d22b45939960b593f3abd4da7f

Aliases

arxiv: 1309.0979 · arxiv_version: 1309.0979v1 · doi: 10.48550/arxiv.1309.0979 · pith_short_12: 6DE6EEWT6ARJ · pith_short_16: 6DE6EEWT6ARJOVU6 · pith_short_8: 6DE6EEWT

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/6DE6EEWT6ARJOVU6BCF2FOPP3R \
  | 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: f0c9e212d3f02297569e088ba2b9efdc61c7e7d22b45939960b593f3abd4da7f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8fc11fdb46bfe2dda9e6c10de9c3e42e73f375e943a357054d07edc9aabb7a49",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2013-09-04T11:27:50Z",
    "title_canon_sha256": "b23b07fab66ac1db7b5e7373679ed256a1f47ea6f847433290948b88b6866ad8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.0979",
    "kind": "arxiv",
    "version": 1
  }
}