Pith Number

pith:7O3N4KUT

pith:2017:7O3N4KUTR7NFYGPLWNOBWUIROB

not attested not anchored not stored refs pending

Algorithms for Positive Semidefinite Factorization

Arnaud Vandaele, Fran\c{c}ois Glineur, Nicolas Gillis

arxiv:1707.07953 v1 · 2017-07-25 · math.OC · cs.DM · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7O3N4KUTR7NFYGPLWNOBWUIROB}

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	2026-05-18T00:07:12.061715Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fbb6de2a938fda5c19ebb35c1b511170607fb32527811d50976c2f065d746e84

Aliases

arxiv: 1707.07953 · arxiv_version: 1707.07953v1 · doi: 10.48550/arxiv.1707.07953 · pith_short_12: 7O3N4KUTR7NF · pith_short_16: 7O3N4KUTR7NFYGPL · pith_short_8: 7O3N4KUT

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/7O3N4KUTR7NFYGPLWNOBWUIROB \
  | 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: fbb6de2a938fda5c19ebb35c1b511170607fb32527811d50976c2f065d746e84

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3dc8dc1c2c9390adfb42070166048752396e82fce90ecaa6433333a660078a83",
    "cross_cats_sorted": [
      "cs.DM",
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2017-07-25T12:32:57Z",
    "title_canon_sha256": "6223b19522cfd968d93953394d8f7dd346d3915ad0230f759a613e0c9e823242"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.07953",
    "kind": "arxiv",
    "version": 1
  }
}