Pith Number

pith:ILIA7PGV

pith:2009:ILIA7PGVZY3WVJ2IMDVT2KCI42

not attested not anchored not stored refs pending

An Explicit Construction of Gauss-Jordan Elimination Matrix

Yi Li

arxiv:0907.5038 v1 · 2009-07-29 · cs.SC · cs.NA · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ILIA7PGVZY3WVJ2IMDVT2KCI42}

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	2026-06-03T23:06:28.112138Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

42d00fbcd5ce376aa74860eb3d2848e69ec8f65a9017153c543a93a08138d756

Aliases

arxiv: 0907.5038 · arxiv_version: 0907.5038v1 · doi: 10.48550/arxiv.0907.5038 · pith_short_12: ILIA7PGVZY3W · pith_short_16: ILIA7PGVZY3WVJ2I · pith_short_8: ILIA7PGV

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/ILIA7PGVZY3WVJ2IMDVT2KCI42 \
  | 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: 42d00fbcd5ce376aa74860eb3d2848e69ec8f65a9017153c543a93a08138d756

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7fffa81554860d9936ea1222ab1f7a65fd4091a2ff04b7b94a508eb02ff9fe79",
    "cross_cats_sorted": [
      "cs.NA",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SC",
    "submitted_at": "2009-07-29T02:01:45Z",
    "title_canon_sha256": "2ca031e5a973ad6360915c17b6aae47989fc83090ce425ea8b61a24f7e074de0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.5038",
    "kind": "arxiv",
    "version": 1
  }
}