Pith Number

pith:ONVRKKWT

pith:2016:ONVRKKWTQO6PYWTQH6Q2TWYADE

not attested not anchored not stored refs pending

Best polynomial approximation on the unit ball

Miguel Pinar, Yuan Xu

arxiv:1609.05515 v2 · 2016-09-18 · math.CA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ONVRKKWTQO6PYWTQH6Q2TWYADE}

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	2026-05-18T00:45:15.473903Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

736b152ad383bcfc5a703fa1a9db00192f2bfaece0a1259fd0ced321c0339f12

Aliases

arxiv: 1609.05515 · arxiv_version: 1609.05515v2 · doi: 10.48550/arxiv.1609.05515 · pith_short_12: ONVRKKWTQO6P · pith_short_16: ONVRKKWTQO6PYWTQ · pith_short_8: ONVRKKWT

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/ONVRKKWTQO6PYWTQH6Q2TWYADE \
  | 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: 736b152ad383bcfc5a703fa1a9db00192f2bfaece0a1259fd0ced321c0339f12

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fd9416c10c3a80e46fd4c24723542e246fa73babb5f076518fc118a504156bb1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CA",
    "submitted_at": "2016-09-18T17:09:11Z",
    "title_canon_sha256": "d6044faf6b73d92dcc618076f43ed94fcad2c4a4b49e0516114b1d92aff7317c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1609.05515",
    "kind": "arxiv",
    "version": 2
  }
}