Pith Number

pith:SMZPT2H2

pith:2017:SMZPT2H237NL4Y75M4GTB2HGLM

not attested not anchored not stored refs pending

Perfect Elimination Orderings for Symmetric Matrices

Monique Laurent, Shin-ichi Tanigawa

arxiv:1704.05115 v1 · 2017-04-17 · 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{SMZPT2H237NL4Y75M4GTB2HGLM}

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	2026-05-18T00:00:33.302954Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9332f9e8fadfdabe63fd670d30e8e65b34c0139e5a7561959281a85339b86036

Aliases

arxiv: 1704.05115 · arxiv_version: 1704.05115v1 · doi: 10.48550/arxiv.1704.05115 · pith_short_12: SMZPT2H237NL · pith_short_16: SMZPT2H237NL4Y75 · pith_short_8: SMZPT2H2

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/SMZPT2H237NL4Y75M4GTB2HGLM \
  | 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: 9332f9e8fadfdabe63fd670d30e8e65b34c0139e5a7561959281a85339b86036

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1674e9c7326a0e7e858a21eb0970534a0ea06c1d3d22794ba44492df57ef8ebe",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2017-04-17T20:14:54Z",
    "title_canon_sha256": "0954266098ae347ae20bc388667fea1ca6f92b069e6860572dba5207137b8b75"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1704.05115",
    "kind": "arxiv",
    "version": 1
  }
}