Pith Number

pith:SFIIL5CH

pith:2013:SFIIL5CHW4NAIGWE6BJ67LWDRP

not attested not anchored not stored refs pending

Portfolio Optimization in R

M. Andrecut

arxiv:1307.0450 v2 · 2013-07-01 · 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{SFIIL5CHW4NAIGWE6BJ67LWDRP}

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	2026-05-18T03:07:34.053156Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

915085f447b71a041ac4f053efaec38bf58d2c8adf807f37207ddfbfe70afeda

Aliases

arxiv: 1307.0450 · arxiv_version: 1307.0450v2 · doi: 10.48550/arxiv.1307.0450 · pith_short_12: SFIIL5CHW4NA · pith_short_16: SFIIL5CHW4NAIGWE · pith_short_8: SFIIL5CH

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/SFIIL5CHW4NAIGWE6BJ67LWDRP \
  | 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: 915085f447b71a041ac4f053efaec38bf58d2c8adf807f37207ddfbfe70afeda

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5ae8d7d5fcf8bf2031fc7ec9368ee4c33949e358edf648633744b1b0ed38baf7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-fin.PM",
    "submitted_at": "2013-07-01T17:48:40Z",
    "title_canon_sha256": "da5e10a987b3086d914843d692ea279562f999bbad1fb991b7ac3afd4d9f1ac4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.0450",
    "kind": "arxiv",
    "version": 2
  }
}