Pith Number

pith:QLIRXI4Q

pith:2021:QLIRXI4Q4AD7OLGJ3DWUMH37KW

not attested not anchored not stored refs pending

Typical structure of hereditary properties of binary matroids

Hamed Hatami, Peter Nelson, Sergey Norin, Stefan Grosser

arxiv:2105.02278 v1 · 2021-05-05 · 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{QLIRXI4Q4AD7OLGJ3DWUMH37KW}

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	2026-07-05T02:37:59.887494Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

82d11ba390e007f72cc9d8ed461f7f559c457d4071a9eb19cab82adc9c7450c2

Aliases

arxiv: 2105.02278 · arxiv_version: 2105.02278v1 · doi: 10.48550/arxiv.2105.02278 · pith_short_12: QLIRXI4Q4AD7 · pith_short_16: QLIRXI4Q4AD7OLGJ · pith_short_8: QLIRXI4Q

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/QLIRXI4Q4AD7OLGJ3DWUMH37KW \
  | 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: 82d11ba390e007f72cc9d8ed461f7f559c457d4071a9eb19cab82adc9c7450c2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e3561852d2b75c62be08a67ac2e96ecbed915fcc245c80f16c52e5b4d54add35",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2021-05-05T18:44:27Z",
    "title_canon_sha256": "83d0cfefda1b3ee7747e95810c7ce64a65aaf3eb8bef062a4c023a85cde1dd2c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2105.02278",
    "kind": "arxiv",
    "version": 1
  }
}