Pith Number

pith:ZRTKVW74

pith:2019:ZRTKVW74UZZPSNFUPOF4PKKUOS

not attested not anchored not stored refs pending

Polynomial approximation avoiding values in countable sets

Johan Andersson, Linnea Rousu

arxiv:1907.00204 v1 · 2019-06-29 · math.CV

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZRTKVW74UZZPSNFUPOF4PKKUOS}

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	2026-05-17T23:41:52.517059Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cc66aadbfca672f934b47b8bc7a954749c3cb845437d83739d6856b16b39d853

Aliases

arxiv: 1907.00204 · arxiv_version: 1907.00204v1 · doi: 10.48550/arxiv.1907.00204 · pith_short_12: ZRTKVW74UZZP · pith_short_16: ZRTKVW74UZZPSNFU · pith_short_8: ZRTKVW74

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/ZRTKVW74UZZPSNFUPOF4PKKUOS \
  | 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: cc66aadbfca672f934b47b8bc7a954749c3cb845437d83739d6856b16b39d853

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8b7440aea6ae010c07ec7c4c27e1e98535359d9bdf65d2890e6e890f62cd2131",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CV",
    "submitted_at": "2019-06-29T13:30:48Z",
    "title_canon_sha256": "fd37a4adf168418a87155a6f11d7682596d84a2601633e5931c08a231d0701fc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.00204",
    "kind": "arxiv",
    "version": 1
  }
}