Pith Number

pith:7U77FI3M

pith:2013:7U77FI3M5D6XSX352AGWBLJUJL

not attested not anchored not stored refs pending

Emerging problems in approximation theory for the numerical solution of nonlinear PDEs of integrable type

Cornelis van der Mee, Luisa Fermo, Sebastiano Seatzu

arxiv:1312.5540 v1 · 2013-12-19 · 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{7U77FI3M5D6XSX352AGWBLJUJL}

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	2026-05-18T02:18:51.951998Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fd3ff2a36ce8fd795f7dd00d60ad344ae607f656ee4ff33e84d2c3051b56a60a

Aliases

arxiv: 1312.5540 · arxiv_version: 1312.5540v1 · doi: 10.48550/arxiv.1312.5540 · pith_short_12: 7U77FI3M5D6X · pith_short_16: 7U77FI3M5D6XSX35 · pith_short_8: 7U77FI3M

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/7U77FI3M5D6XSX352AGWBLJUJL \
  | 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: fd3ff2a36ce8fd795f7dd00d60ad344ae607f656ee4ff33e84d2c3051b56a60a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4c924933af580174b1e773c71f43cbd5913e6bda80d19b8980b59093234fabb3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2013-12-19T13:30:16Z",
    "title_canon_sha256": "315e4fa3ea6b2c5f6a28aea2c0da3cd7510e47afb79f7eca00bcefb783ec8278"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1312.5540",
    "kind": "arxiv",
    "version": 1
  }
}