Pith Number

pith:IFJHVSJY

pith:2020:IFJHVSJY2WYTNWIRLKRDGLT73J

not attested not anchored not stored refs pending

Robust Recovery of Sparse Nonnegative Weights from Mixtures of Positive-Semidefinite Matrices

Fabian Jaensch, Peter Jung

arxiv:2003.12005 v1 · 2020-03-26 · cs.IT · math.IT · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IFJHVSJY2WYTNWIRLKRDGLT73J}

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	2026-07-05T00:50:49.433623Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

41527ac938d5b136d9115aa2332e7fda5ad04cd6e36c58cf2c9b57ecc948bade

Aliases

arxiv: 2003.12005 · arxiv_version: 2003.12005v1 · doi: 10.48550/arxiv.2003.12005 · pith_short_12: IFJHVSJY2WYT · pith_short_16: IFJHVSJY2WYTNWIR · pith_short_8: IFJHVSJY

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/IFJHVSJY2WYTNWIRLKRDGLT73J \
  | 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: 41527ac938d5b136d9115aa2332e7fda5ad04cd6e36c58cf2c9b57ecc948bade

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5acc5d75f77068f3c4f338f0f2ecebeefb5f3d1c4f12bb1b7d1da9f92dc2be1d",
    "cross_cats_sorted": [
      "math.IT",
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2020-03-26T16:16:42Z",
    "title_canon_sha256": "e05f7dc229c502ed6a1b2e0f6cf657e149b16b19cca02ff4e197bc85526f344f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2003.12005",
    "kind": "arxiv",
    "version": 1
  }
}