Pith Number

pith:7QIL2UGN

pith:2015:7QIL2UGN7UPCGNTUTVPZ533VEC

not attested not anchored not stored refs pending

A new proof of Seymour's 6-flow theorem

Edita Rollov\'a, Matt DeVos, Robert \v{S}\'amal

arxiv:1512.06214 v1 · 2015-12-19 · 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{7QIL2UGN7UPCGNTUTVPZ533VEC}

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	2026-05-18T01:24:04.816370Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fc10bd50cdfd1e2336749d5f9eef75208d7a8b02964e7ce8251c928696403fdd

Aliases

arxiv: 1512.06214 · arxiv_version: 1512.06214v1 · doi: 10.48550/arxiv.1512.06214 · pith_short_12: 7QIL2UGN7UPC · pith_short_16: 7QIL2UGN7UPCGNTU · pith_short_8: 7QIL2UGN

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/7QIL2UGN7UPCGNTUTVPZ533VEC \
  | 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: fc10bd50cdfd1e2336749d5f9eef75208d7a8b02964e7ce8251c928696403fdd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2db7d6a30f2bea6c57f23836d5fe780d54621d692074cfe04c4124c8d6fc449d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2015-12-19T09:28:31Z",
    "title_canon_sha256": "82ab4db60c3743d394288f0f0929eeb943b2ad0a6b2eb12726f67b9f9e05e23c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.06214",
    "kind": "arxiv",
    "version": 1
  }
}