Pith Number

pith:VWIM3SRS

pith:2020:VWIM3SRSGEL3RJFPLKX7LUYWGG

not attested not anchored not stored refs pending

Lowest-degree piecewise polynomial de Rham complex on general quadrilateral grids

Qimeng Quan, Shuo Zhang, Xia Ji

arxiv:2001.08150 v2 · 2020-01-22 · 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{VWIM3SRSGEL3RJFPLKX7LUYWGG}

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	2026-07-05T01:13:08.163150Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ad90cdca323117b8a4af5aaff5d316318b1e6975faa0343c4210d12027c6d51c

Aliases

arxiv: 2001.08150 · arxiv_version: 2001.08150v2 · doi: 10.48550/arxiv.2001.08150 · pith_short_12: VWIM3SRSGEL3 · pith_short_16: VWIM3SRSGEL3RJFP · pith_short_8: VWIM3SRS

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/VWIM3SRSGEL3RJFPLKX7LUYWGG \
  | 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: ad90cdca323117b8a4af5aaff5d316318b1e6975faa0343c4210d12027c6d51c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "69e3b638e1acff957a719711554c999d7a5d1cf0ee48112843dfe6796a0b0862",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2020-01-22T17:10:57Z",
    "title_canon_sha256": "cdf0e762f4bb37cebb89969f2e7a8c1af8d26b816083e52b98301bbd7a87fb26"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2001.08150",
    "kind": "arxiv",
    "version": 2
  }
}