Pith Number

pith:IUDGKJLK

pith:2010:IUDGKJLKVCCVNNELJ2WAG4YO6O

not attested not anchored not stored refs pending

Foundations for a theory of complex matroids

Emanuele Delucchi, Laura Anderson

arxiv:1005.3560 v2 · 2010-05-19 · 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{IUDGKJLKVCCVNNELJ2WAG4YO6O}

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	2026-05-18T03:29:51.372451Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

450665256aa88556b48b4eac03730ef394984fc5437a44de3ead16dfa1b05606

Aliases

arxiv: 1005.3560 · arxiv_version: 1005.3560v2 · doi: 10.48550/arxiv.1005.3560 · pith_short_12: IUDGKJLKVCCV · pith_short_16: IUDGKJLKVCCVNNEL · pith_short_8: IUDGKJLK

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/IUDGKJLKVCCVNNELJ2WAG4YO6O \
  | 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: 450665256aa88556b48b4eac03730ef394984fc5437a44de3ead16dfa1b05606

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "278b3f85238bcecf12e39635deb7546dcc9fa10043a8f45862ba18fbf589a78b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2010-05-19T21:03:39Z",
    "title_canon_sha256": "b4a37f2d159a64814e13d4183d85e720c030f15e209fd958666193b8553a81ee"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1005.3560",
    "kind": "arxiv",
    "version": 2
  }
}