Pith Number

pith:35JKIPNR

pith:2003:35JKIPNRDZEAIAWBPKKRTLQB6V

not attested not anchored not stored refs pending

A Semidefinite Representation for some Minimum Cardinality Problems

Alexandre d'Aspremont

arxiv:math/0302092 v2 · 2003-02-09 · 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{35JKIPNRDZEAIAWBPKKRTLQB6V}

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	2026-07-04T14:37:04.189037Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

df52a43db11e480402c17a9519ae01f57e06de8c6c210847737298036c816df8

Aliases

arxiv: math/0302092 · arxiv_version: math/0302092v2 · doi: 10.48550/arxiv.math/0302092 · pith_short_12: 35JKIPNRDZEA · pith_short_16: 35JKIPNRDZEAIAWB · pith_short_8: 35JKIPNR

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/35JKIPNRDZEAIAWBPKKRTLQB6V \
  | 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: df52a43db11e480402c17a9519ae01f57e06de8c6c210847737298036c816df8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a6ef0ad9b77d589f362155877d101b2285d581b54015cdce70666dd65fe5d921",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "math.OC",
    "submitted_at": "2003-02-09T21:31:42Z",
    "title_canon_sha256": "273675ccbf40f9a28179ae24b0be122217a807aa1b32d9154544d5cabb1d7f6b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0302092",
    "kind": "arxiv",
    "version": 2
  }
}