Pith Number

pith:FVWNZ3OO

pith:2021:FVWNZ3OOKYNHUIJBWTBTZH22YM

not attested not anchored not stored refs pending

Weighted and shifted BDF2 methods on variable grids

Fan Yu, Minghua Chen, Qingdong Zhang

arxiv:2108.02910 v1 · 2021-08-06 · math.NA · cs.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{FVWNZ3OOKYNHUIJBWTBTZH22YM}

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	2026-07-05T03:03:43.521076Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2d6cdcedce561a7a2121b4c33c9f5ac323430eb15ff70f9cadd1307bbb1c2bc5

Aliases

arxiv: 2108.02910 · arxiv_version: 2108.02910v1 · doi: 10.48550/arxiv.2108.02910 · pith_short_12: FVWNZ3OOKYNH · pith_short_16: FVWNZ3OOKYNHUIJB · pith_short_8: FVWNZ3OO

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/FVWNZ3OOKYNHUIJBWTBTZH22YM \
  | 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: 2d6cdcedce561a7a2121b4c33c9f5ac323430eb15ff70f9cadd1307bbb1c2bc5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "88cfc3f4bc422f20dd20a41ac2372610902841f58a6ada8d45fb4173c02ef301",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2021-08-06T01:49:05Z",
    "title_canon_sha256": "b14bc51c33f141f624b32f37d4e7fdc3b42c1bf0bd0c3c2eb218ee4590e52f84"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2108.02910",
    "kind": "arxiv",
    "version": 1
  }
}