Pith Number

pith:KGWFP6WG

pith:2014:KGWFP6WGDGACJP7I2GPWH5FTBK

not attested not anchored not stored refs pending

Matroid theory for algebraic geometers

Eric Katz

arxiv:1409.3503 v1 · 2014-09-11 · math.AG · 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{KGWFP6WGDGACJP7I2GPWH5FTBK}

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	2026-05-18T02:43:01.180695Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

51ac57fac6198024bfe8d19f63f4b30a9b9e2c1c5b06d2d476c31d50f226724a

Aliases

arxiv: 1409.3503 · arxiv_version: 1409.3503v1 · doi: 10.48550/arxiv.1409.3503 · pith_short_12: KGWFP6WGDGAC · pith_short_16: KGWFP6WGDGACJP7I · pith_short_8: KGWFP6WG

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/KGWFP6WGDGACJP7I2GPWH5FTBK \
  | 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: 51ac57fac6198024bfe8d19f63f4b30a9b9e2c1c5b06d2d476c31d50f226724a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f162ef83e2bfb262f1391dc8bc06952b57522f0a991a6fe6512a8e423c214d57",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2014-09-11T17:10:23Z",
    "title_canon_sha256": "3519c752a2f4c533960fef6bcb71b9dda944c096d484762c449250ee4baa57cd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.3503",
    "kind": "arxiv",
    "version": 1
  }
}