Pith Number

pith:QBYZ6WUU

pith:2012:QBYZ6WUUP4CACCMJOJCE4URHEM

not attested not anchored not stored refs pending

A stability barrier for reconstructions from Fourier samples

Alexei Shadrin, Anders C. Hansen, Ben Adcock

arxiv:1210.7831 v2 · 2012-10-29 · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QBYZ6WUUP4CACCMJOJCE4URHEM}

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	2026-05-18T03:34:48.027179Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

80719f5a947f0401098972444e5227230f485d7bfc43009752ee0db283546c57

Aliases

arxiv: 1210.7831 · arxiv_version: 1210.7831v2 · doi: 10.48550/arxiv.1210.7831 · pith_short_12: QBYZ6WUUP4CA · pith_short_16: QBYZ6WUUP4CACCMJ · pith_short_8: QBYZ6WUU

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/QBYZ6WUUP4CACCMJOJCE4URHEM \
  | 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: 80719f5a947f0401098972444e5227230f485d7bfc43009752ee0db283546c57

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1f887bab526fe01b10b93d930e64157e1d819ac6704c4b55202a021654fac594",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2012-10-29T20:33:48Z",
    "title_canon_sha256": "7f0bbae85d98f465f0fad361f6bf01ce89b626e572c0154cc477150ded9db414"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1210.7831",
    "kind": "arxiv",
    "version": 2
  }
}