Pith Number

pith:7SXVJWGF

pith:2016:7SXVJWGFFOJ3TJWMIJ5FSLHPU6

not attested not anchored not stored refs pending

Virtuous smoothing for global optimization

Daphne Skipper, Jon Lee

arxiv:1605.05221 v2 · 2016-05-17 · 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{7SXVJWGFFOJ3TJWMIJ5FSLHPU6}

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	2026-05-18T00:03:00.582663Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fcaf54d8c52b93b9a6cc427a592cefa79745572f367a04113804a5ad6925687f

Aliases

arxiv: 1605.05221 · arxiv_version: 1605.05221v2 · doi: 10.48550/arxiv.1605.05221 · pith_short_12: 7SXVJWGFFOJ3 · pith_short_16: 7SXVJWGFFOJ3TJWM · pith_short_8: 7SXVJWGF

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/7SXVJWGFFOJ3TJWMIJ5FSLHPU6 \
  | 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: fcaf54d8c52b93b9a6cc427a592cefa79745572f367a04113804a5ad6925687f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "17f536b3dd06ac0fda0e0de4cf9d7d12258498fd4425e725f6d0f950b431edfe",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2016-05-17T15:59:45Z",
    "title_canon_sha256": "11719f8779f95949789dcfe39fd8a83cbb49b72362c013fc7a6445f1147b9d2f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1605.05221",
    "kind": "arxiv",
    "version": 2
  }
}