Pith Number

pith:3L4DYT2B

pith:2012:3L4DYT2BPNIMUOBNNPO6KYMAAT

not attested not anchored not stored refs pending

An adjoint control method for initial condition identification of the Abstract Cauchy problem

Cary Humber, Kazufumi Ito

arxiv:1202.5263 v1 · 2012-02-23 · math.OC · math.AP · 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{3L4DYT2BPNIMUOBNNPO6KYMAAT}

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	2026-05-18T04:01:38.544964Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

daf83c4f417b50ca382d6bdde5618004d08b0c9dfe63f3b4312e1ba28c87fd04

Aliases

arxiv: 1202.5263 · arxiv_version: 1202.5263v1 · doi: 10.48550/arxiv.1202.5263 · pith_short_12: 3L4DYT2BPNIM · pith_short_16: 3L4DYT2BPNIMUOBN · pith_short_8: 3L4DYT2B

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/3L4DYT2BPNIMUOBNNPO6KYMAAT \
  | 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: daf83c4f417b50ca382d6bdde5618004d08b0c9dfe63f3b4312e1ba28c87fd04

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f18d2abba3163d960f9b312897f73d8c4f86a9331fe9d1c113967565e86d78fc",
    "cross_cats_sorted": [
      "math.AP",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2012-02-23T18:49:48Z",
    "title_canon_sha256": "04299112d6defe37c499093c922cca3695abbdcbeebc5e4dda17f6e2743580d7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.5263",
    "kind": "arxiv",
    "version": 1
  }
}