Pith Number

pith:OCOVIK6H

pith:2018:OCOVIK6HJAIE3JFYLROG7HWLNK

not attested not anchored not stored refs pending

Using Column Generation to Solve Extensions to the Markowitz Model

Aras Selvi, Juan C. Vera, Lorenz M. Roebers

arxiv:1812.00093 v4 · 2018-11-30 · math.OC · q-fin.PM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OCOVIK6HJAIE3JFYLROG7HWLNK}

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	2026-05-17T23:42:42.732981Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

709d542bc748104da4b85c5c6f9ecb6a898849cb7379eec5e43f97786f63e22a

Aliases

arxiv: 1812.00093 · arxiv_version: 1812.00093v4 · doi: 10.48550/arxiv.1812.00093 · pith_short_12: OCOVIK6HJAIE · pith_short_16: OCOVIK6HJAIE3JFY · pith_short_8: OCOVIK6H

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/OCOVIK6HJAIE3JFYLROG7HWLNK \
  | 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: 709d542bc748104da4b85c5c6f9ecb6a898849cb7379eec5e43f97786f63e22a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0ca212ab6c0a8be88ed65339cd6b0d0c2420c0e33a96347c359838e3f7aba158",
    "cross_cats_sorted": [
      "q-fin.PM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2018-11-30T23:29:24Z",
    "title_canon_sha256": "ef14af2e8868552a8dfad692bbf82e6a7558eec056202cd2585bb6740a72d5f8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.00093",
    "kind": "arxiv",
    "version": 4
  }
}