Pith Number

pith:RKB2DHOT

pith:2012:RKB2DHOTQFK77PMHGMYI6XCTE7

not attested not anchored not stored refs pending

A new graph parameter related to bounded rank positive semidefinite matrix completions

Antonios Varvitsiotis, Monique Laurent

arxiv:1204.0734 v1 · 2012-04-03 · 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{RKB2DHOTQFK77PMHGMYI6XCTE7}

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	2026-05-18T03:58:38.617342Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8a83a19dd38155ffbd8733308f5c5327fb7ecc679c8dae21215c7e821d22bf4b

Aliases

arxiv: 1204.0734 · arxiv_version: 1204.0734v1 · doi: 10.48550/arxiv.1204.0734 · pith_short_12: RKB2DHOTQFK7 · pith_short_16: RKB2DHOTQFK77PMH · pith_short_8: RKB2DHOT

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/RKB2DHOTQFK77PMHGMYI6XCTE7 \
  | 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: 8a83a19dd38155ffbd8733308f5c5327fb7ecc679c8dae21215c7e821d22bf4b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3b62a1a5aea5ec4629b424e6e39af3522bb8dd436994574c86e551d96889d168",
    "cross_cats_sorted": [
      "cs.DM",
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2012-04-03T17:10:31Z",
    "title_canon_sha256": "21a8e2059ea2a148065596f25d928b1d145b342d3b26b41029d681cbae42edfa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.0734",
    "kind": "arxiv",
    "version": 1
  }
}