Pith Number

pith:PJ7CFHFW

pith:2018:PJ7CFHFWZXW2HQDXYHSPICF7GB

not attested not anchored not stored refs pending

An Active Set Algorithm for Robust Combinatorial Optimization Based on Separation Oracles

Christoph Buchheim, Marianna De Santis

arxiv:1804.02239 v1 · 2018-04-06 · 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{PJ7CFHFWZXW2HQDXYHSPICF7GB}

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	2026-05-18T00:19:05.435892Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7a7e229cb6cdeda3c077c1e4f408bf305bfa9f2a684f18704a1928c5fe1995b7

Aliases

arxiv: 1804.02239 · arxiv_version: 1804.02239v1 · doi: 10.48550/arxiv.1804.02239 · pith_short_12: PJ7CFHFWZXW2 · pith_short_16: PJ7CFHFWZXW2HQDX · pith_short_8: PJ7CFHFW

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/PJ7CFHFWZXW2HQDXYHSPICF7GB \
  | 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: 7a7e229cb6cdeda3c077c1e4f408bf305bfa9f2a684f18704a1928c5fe1995b7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c363ee7aaa5309d7f6de6152ba84f77262b3b4f2d8b0152fc1d1c12ca625fe92",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2018-04-06T12:51:58Z",
    "title_canon_sha256": "2c12e2fa88de52066ee75fcc9b9298c518d0c1a0ab98ca5aa1a598a6ffeba387"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.02239",
    "kind": "arxiv",
    "version": 1
  }
}