Pith Number

pith:OIMQHEK7

pith:2014:OIMQHEK7FZ62QN4QZOZ7EUDHVY

not attested not anchored not stored refs pending

Some approximation problems in semi-algebraic geometry

Malgorzata Stawiska, Shmuel Friedland

arxiv:1412.3178 v3 · 2014-12-10 · math.AG · math.MG · 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{OIMQHEK7FZ62QN4QZOZ7EUDHVY}

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	2026-05-18T00:06:26.897890Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

721903915f2e7da83790cbb3f25067ae23ab564e30dcb3c0a41705bc76aa4130

Aliases

arxiv: 1412.3178 · arxiv_version: 1412.3178v3 · doi: 10.48550/arxiv.1412.3178 · pith_short_12: OIMQHEK7FZ62 · pith_short_16: OIMQHEK7FZ62QN4Q · pith_short_8: OIMQHEK7

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/OIMQHEK7FZ62QN4QZOZ7EUDHVY \
  | 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: 721903915f2e7da83790cbb3f25067ae23ab564e30dcb3c0a41705bc76aa4130

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "46b4133474e490fb13ae188495ea534482ca8c3e76e75f379c2b70821370ccc2",
    "cross_cats_sorted": [
      "math.MG",
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2014-12-10T02:06:45Z",
    "title_canon_sha256": "8d4bfeea151e5680f29a8a665317a31510eab7e3b090421b7c48ca65a75482de"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1412.3178",
    "kind": "arxiv",
    "version": 3
  }
}