Pith Number

pith:4CMZMLZ7

pith:2011:4CMZMLZ727A4XQFLXQG66U2CK3

not attested not anchored not stored refs pending

The Unified Method: I Non-Linearizable Problems on the Half-Line

A. S. Fokas, J. Lenells

arxiv:1109.4935 v1 · 2011-09-21 · math.AP · nlin.SI

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4CMZMLZ727A4XQFLXQG66U2CK3}

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	2026-05-18T02:00:26.378416Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e099962f3fd7c1cbc0abbc0def534256d666eded39fc2e1efe44b2e8da14ffde

Aliases

arxiv: 1109.4935 · arxiv_version: 1109.4935v1 · doi: 10.48550/arxiv.1109.4935 · pith_short_12: 4CMZMLZ727A4 · pith_short_16: 4CMZMLZ727A4XQFL · pith_short_8: 4CMZMLZ7

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/4CMZMLZ727A4XQFLXQG66U2CK3 \
  | 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: e099962f3fd7c1cbc0abbc0def534256d666eded39fc2e1efe44b2e8da14ffde

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "888c6d9143a1011aa9198f6a520bf7b307791c01fe9a9259e189186d5318d1f0",
    "cross_cats_sorted": [
      "nlin.SI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2011-09-21T19:04:03Z",
    "title_canon_sha256": "1f171c264ffe0635aa07e04daa7906fb5067b51bd376a16fc67b7ce52dbc596b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.4935",
    "kind": "arxiv",
    "version": 1
  }
}