Pith Number

pith:OMR2LDHH

pith:2013:OMR2LDHHXSF4KIVOLZ26Y5BQOI

not attested not anchored not stored refs pending

Linearized FE approximations to a nonlinear gradient flow

Buyang Li, Weiwei Sun

arxiv:1309.7589 v2 · 2013-09-29 · 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{OMR2LDHHXSF4KIVOLZ26Y5BQOI}

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	2026-05-18T02:49:45.894918Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7323a58ce7bc8bc522ae5e75ec7430721d16a6fe223ad81859b31447f7ecd94d

Aliases

arxiv: 1309.7589 · arxiv_version: 1309.7589v2 · doi: 10.48550/arxiv.1309.7589 · pith_short_12: OMR2LDHHXSF4 · pith_short_16: OMR2LDHHXSF4KIVO · pith_short_8: OMR2LDHH

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/OMR2LDHHXSF4KIVOLZ26Y5BQOI \
  | 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: 7323a58ce7bc8bc522ae5e75ec7430721d16a6fe223ad81859b31447f7ecd94d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b8fcc8c0c80b233d8d9170dcf0ce9cc14f09155474f1af717853c065c3bbe81f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2013-09-29T12:44:41Z",
    "title_canon_sha256": "add390b2366aea39677c06874692110f7121b106eb8fc714384811d742c56926"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.7589",
    "kind": "arxiv",
    "version": 2
  }
}