Pith Number

pith:GZH2ESX5

pith:2024:GZH2ESX5M4C6VRL3UH5BXLIRXI

not attested not anchored not stored refs pending

Extensions and Deletions of matroid classes closed under flats

Jagdeep Singh, Vaidy Sivaraman

arxiv:2403.15496 v3 · 2024-03-21 · 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{GZH2ESX5M4C6VRL3UH5BXLIRXI}

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	2026-06-01T01:02:11.879871Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

364fa24afd6705eac57ba1fa1bad11ba3bfbe4ab088e95ad4c4cc02a2fb71899

Aliases

arxiv: 2403.15496 · arxiv_version: 2403.15496v3 · doi: 10.48550/arxiv.2403.15496 · pith_short_12: GZH2ESX5M4C6 · pith_short_16: GZH2ESX5M4C6VRL3 · pith_short_8: GZH2ESX5

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/GZH2ESX5M4C6VRL3UH5BXLIRXI \
  | 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: 364fa24afd6705eac57ba1fa1bad11ba3bfbe4ab088e95ad4c4cc02a2fb71899

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "362c6bcb894b260a88ab7217909b49b029dc1bcb3f20d2ccdf1622b5b883b0b4",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2024-03-21T17:58:24Z",
    "title_canon_sha256": "3d7b0d169631e3e3c740c3020b592d8c70f7c8e509cc2e4ad886d874f8652cc3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2403.15496",
    "kind": "arxiv",
    "version": 3
  }
}