Pith Number

pith:2HV3SGQ5

pith:2021:2HV3SGQ5DFIZ63MQSQOWU5QJH6

not attested not anchored not stored refs pending

Structured Sparse Non-negative Matrix Factorization with L20-Norm for scRNA-seq Data Analysis

Taosheng Xu, Tsung-Hui Chang, Wenwen Min, Xiang Wan

arxiv:2104.13171 v1 · 2021-04-27 · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2HV3SGQ5DFIZ63MQSQOWU5QJH6}

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	2026-07-05T02:35:46.036475Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d1ebb91a1d19519f6d90941d6a76093fa01cfc998d2046e297261c5c0d0b5ada

Aliases

arxiv: 2104.13171 · arxiv_version: 2104.13171v1 · doi: 10.48550/arxiv.2104.13171 · pith_short_12: 2HV3SGQ5DFIZ · pith_short_16: 2HV3SGQ5DFIZ63MQ · pith_short_8: 2HV3SGQ5

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/2HV3SGQ5DFIZ63MQSQOWU5QJH6 \
  | 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: d1ebb91a1d19519f6d90941d6a76093fa01cfc998d2046e297261c5c0d0b5ada

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "635ee91206bf943059b8dc85ef7686f0af12e58a074c8bdbaf5cf8692be6f79b",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2021-04-27T13:31:41Z",
    "title_canon_sha256": "5256cc130d0d460f788a33f67131cdaca70b0516130f381c4ed049634e7a2d8e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.13171",
    "kind": "arxiv",
    "version": 1
  }
}