Pith Number

pith:4EMGT4A2

pith:2019:4EMGT4A2QEF2JV2YAVVG3WXF4R

not attested not anchored not stored refs pending

IDENT: Identifying Differential Equations with Numerical Time evolution

Sung Ha Kang, Wenjing Liao, Yingjie Liu

arxiv:1904.03538 v1 · 2019-04-06 · 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{4EMGT4A2QEF2JV2YAVVG3WXF4R}

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	2026-05-17T23:49:13.045620Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e11869f01a810ba4d758056a6ddae5e451ee7ee1bb8c90fe13d845d7a628ea3b

Aliases

arxiv: 1904.03538 · arxiv_version: 1904.03538v1 · doi: 10.48550/arxiv.1904.03538 · pith_short_12: 4EMGT4A2QEF2 · pith_short_16: 4EMGT4A2QEF2JV2Y · pith_short_8: 4EMGT4A2

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/4EMGT4A2QEF2JV2YAVVG3WXF4R \
  | 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: e11869f01a810ba4d758056a6ddae5e451ee7ee1bb8c90fe13d845d7a628ea3b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "85d203acbb6e03624b397a1aa427d766cb990af75d3477285433ecfa656ebb06",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-04-06T22:04:22Z",
    "title_canon_sha256": "84891fff2e4bd399bb4a80dc6ca6c83facee9040766dcad89c38cfe0ba050cc4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.03538",
    "kind": "arxiv",
    "version": 1
  }
}