Pith Number

pith:IJCXOQMA

pith:2019:IJCXOQMAXNXYGHFTDQTNC6E4YA

not attested not anchored not stored refs pending

Packing under Convex Quadratic Constraints

Marc E. Pfetsch, Martin Skutella, Max Klimm, Rico Raber

arxiv:1912.00468 v2 · 2019-12-01 · 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{IJCXOQMAXNXYGHFTDQTNC6E4YA}

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	2026-07-05T00:26:59.786810Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4245774180bb6f831cb31c26d1789cc0302b7992386a812cbc3c994deb4bb53c

Aliases

arxiv: 1912.00468 · arxiv_version: 1912.00468v2 · doi: 10.48550/arxiv.1912.00468 · pith_short_12: IJCXOQMAXNXY · pith_short_16: IJCXOQMAXNXYGHFT · pith_short_8: IJCXOQMA

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/IJCXOQMAXNXYGHFTDQTNC6E4YA \
  | 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: 4245774180bb6f831cb31c26d1789cc0302b7992386a812cbc3c994deb4bb53c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1004470ca72b346ac8464504cd144e4508f4c9888f7c939c31bf7d89ad53725f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2019-12-01T18:24:25Z",
    "title_canon_sha256": "048b9008ac17502ddfc973f54b943f2b270de752950ae56b2dde9d5f29448c48"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1912.00468",
    "kind": "arxiv",
    "version": 2
  }
}