Pith Number

pith:GUCIQX7D

pith:2016:GUCIQX7D2WWHGXZSAYXBHA3PWY

not attested not anchored not stored refs pending

Matrix factoring by fraction-free reduction

David J. Jeffrey, Johannes Middeke

arxiv:1603.03565 v1 · 2016-03-11 · cs.SC

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GUCIQX7D2WWHGXZSAYXBHA3PWY}

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	2026-05-18T01:19:15.318808Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3504885fe3d5ac735f32062e13836fb6251cad97389e868d3c1c8ffe02b5d0bf

Aliases

arxiv: 1603.03565 · arxiv_version: 1603.03565v1 · doi: 10.48550/arxiv.1603.03565 · pith_short_12: GUCIQX7D2WWH · pith_short_16: GUCIQX7D2WWHGXZS · pith_short_8: GUCIQX7D

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/GUCIQX7D2WWHGXZSAYXBHA3PWY \
  | 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: 3504885fe3d5ac735f32062e13836fb6251cad97389e868d3c1c8ffe02b5d0bf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d955b527125ca0d410a4cadd07b2dc10c7416a3d8f580493b64ab1a7c03d5318",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SC",
    "submitted_at": "2016-03-11T08:46:30Z",
    "title_canon_sha256": "f975eb5276a624676aa69d8db21525c3457d44cea3d246377f3f2bc0054467e8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1603.03565",
    "kind": "arxiv",
    "version": 1
  }
}