Pith Number

pith:VVI7FQX6

pith:2015:VVI7FQX6UGECEWUCNHTYVH5TSE

not attested not anchored not stored refs pending

Superconvergence points of fractional spectral interpolation

Xuan Zhao, Zhimin Zhang

arxiv:1503.06888 v1 · 2015-03-24 · 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{VVI7FQX6UGECEWUCNHTYVH5TSE}

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	2026-05-18T02:20:29.846759Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ad51f2c2fea188225a8269e78a9fb3911ab4590e98866753697aed0b24a023a3

Aliases

arxiv: 1503.06888 · arxiv_version: 1503.06888v1 · doi: 10.48550/arxiv.1503.06888 · pith_short_12: VVI7FQX6UGEC · pith_short_16: VVI7FQX6UGECEWUC · pith_short_8: VVI7FQX6

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/VVI7FQX6UGECEWUCNHTYVH5TSE \
  | 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: ad51f2c2fea188225a8269e78a9fb3911ab4590e98866753697aed0b24a023a3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5f69da53f4a0bc5b55e910c96c2bdf144e0407d860624c35a4101132305b4057",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2015-03-24T01:42:41Z",
    "title_canon_sha256": "b668bb6eccb3bbaeb79d4bd715c50e5f44351d31ddd4880cac6fc592fa6fda83"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.06888",
    "kind": "arxiv",
    "version": 1
  }
}