Pith Number

pith:REQQSV7G

pith:2018:REQQSV7GHQNYGM66WN2ZVCA7HU

not attested not anchored not stored refs pending

Smooth exact penalty functions II: a reduction to standard exact penalty functions

M.V. Dolgopolik

arxiv:1801.07769 v2 · 2018-01-23 · 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{REQQSV7GHQNYGM66WN2ZVCA7HU}

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	2026-05-18T00:24:59.103632Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

89210957e63c1b8333deb3759a881f3d39c34f60dedda1c4aa22ec23d2e38844

Aliases

arxiv: 1801.07769 · arxiv_version: 1801.07769v2 · doi: 10.48550/arxiv.1801.07769 · pith_short_12: REQQSV7GHQNY · pith_short_16: REQQSV7GHQNYGM66 · pith_short_8: REQQSV7G

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/REQQSV7GHQNYGM66WN2ZVCA7HU \
  | 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: 89210957e63c1b8333deb3759a881f3d39c34f60dedda1c4aa22ec23d2e38844

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5898b19d8be703fb5a07368866d936d151eabee578fada62331e661aa124c0b3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2018-01-23T20:56:54Z",
    "title_canon_sha256": "dd09e9157a8aa80d75b3a3e92b1ecdf34a1656b513cb4dfe95721ee074cafe04"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.07769",
    "kind": "arxiv",
    "version": 2
  }
}