Pith Number

pith:GYHWQEWL

pith:2021:GYHWQEWLX2KCKZCGURG2DOGQW7

not attested not anchored not stored refs pending

Cyclic matroids

Charles Semple, Gerry Toft, Nick Brettell

arxiv:2112.14914 v2 · 2021-12-30 · 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{GYHWQEWLX2KCKZCGURG2DOGQW7}

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	2026-07-05T04:34:14.831750Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

360f6812cbbe94256446a44da1b8d0b7ed872459c9e24bbf61e39e3d02efb5b0

Aliases

arxiv: 2112.14914 · arxiv_version: 2112.14914v2 · doi: 10.48550/arxiv.2112.14914 · pith_short_12: GYHWQEWLX2KC · pith_short_16: GYHWQEWLX2KCKZCG · pith_short_8: GYHWQEWL

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/GYHWQEWLX2KCKZCGURG2DOGQW7 \
  | 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: 360f6812cbbe94256446a44da1b8d0b7ed872459c9e24bbf61e39e3d02efb5b0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "09fee9d7affff79ef6f4b466266e9463244da3f2623945288202fd79794bb1c9",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2021-12-30T03:55:28Z",
    "title_canon_sha256": "f2ac77050b9398e568f06dc80d709dceea786f1753f52cab15b25e23c7a6b5a3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2112.14914",
    "kind": "arxiv",
    "version": 2
  }
}