Pith Number

pith:6NWEE4I3

pith:2018:6NWEE4I3YJZ2YIHKA64ARNB6NV

not attested not anchored not stored refs pending

A Feature Complete SPIKE Banded Algorithm and Solver

Ahmed H. Sameh, Braegan S. Spring, Eric Polizzi

arxiv:1811.03559 v1 · 2018-11-08 · cs.NA · cs.CE · cs.MS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6NWEE4I3YJZ2YIHKA64ARNB6NV}

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	2026-05-18T00:01:12.527178Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f36c42711bc273ac20ea07b808b43e6d5dd5414f317bf44cb9ac1c36f46e7e38

Aliases

arxiv: 1811.03559 · arxiv_version: 1811.03559v1 · doi: 10.48550/arxiv.1811.03559 · pith_short_12: 6NWEE4I3YJZ2 · pith_short_16: 6NWEE4I3YJZ2YIHK · pith_short_8: 6NWEE4I3

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/6NWEE4I3YJZ2YIHKA64ARNB6NV \
  | 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: f36c42711bc273ac20ea07b808b43e6d5dd5414f317bf44cb9ac1c36f46e7e38

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "28ae09ba9d1cc7e719cc759c57fb697684de6ee80a2e247e75735b11796d223a",
    "cross_cats_sorted": [
      "cs.CE",
      "cs.MS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NA",
    "submitted_at": "2018-11-08T17:28:23Z",
    "title_canon_sha256": "075aad33468e1d97193956fa37dbd62ea8c13b7351530e68101361acda72c299"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.03559",
    "kind": "arxiv",
    "version": 1
  }
}