Pith Number

pith:RXU4MLXZ

pith:2018:RXU4MLXZ3CGLBKO3HUSBCWAE6J

not attested not anchored not stored refs pending

Toward Finding Latent Cities with Non-Negative Matrix Factorization

Denis Parra, Diego Caro, Eduardo Graells-Garrido

arxiv:1801.09093 v1 · 2018-01-27 · cs.SI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RXU4MLXZ3CGLBKO3HUSBCWAE6J}

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	2026-05-18T00:24:58.650570Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8de9c62ef9d88cb0a9db3d24115804f27f07da211d1c278bbceb08013c5a9445

Aliases

arxiv: 1801.09093 · arxiv_version: 1801.09093v1 · doi: 10.48550/arxiv.1801.09093 · pith_short_12: RXU4MLXZ3CGL · pith_short_16: RXU4MLXZ3CGLBKO3 · pith_short_8: RXU4MLXZ

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/RXU4MLXZ3CGLBKO3HUSBCWAE6J \
  | 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: 8de9c62ef9d88cb0a9db3d24115804f27f07da211d1c278bbceb08013c5a9445

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8183d6c5cc5b0c41cf61a11ee594f11730832cb8b1febe8964ce2098b962ee83",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SI",
    "submitted_at": "2018-01-27T14:26:11Z",
    "title_canon_sha256": "17d2b8e4a524a6553f59f8f30fb3b206ed7f11d3395652a73cdee8662f6436b4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.09093",
    "kind": "arxiv",
    "version": 1
  }
}