Pith Number

pith:BF4FAH3J

pith:2019:BF4FAH3JXG3F4FKZ5442YT4O74

not attested not anchored not stored refs pending

Evolution equations on time-dependent intervals

Athanasios S. Fokas, Baoqiang Xia, Beatrice Pelloni

arxiv:1908.03729 v1 · 2019-08-10 · math.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BF4FAH3JXG3F4FKZ5442YT4O74}

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	2026-07-04T23:53:17.787402Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0978501f69b9b65e1559ef39ac4f8eff31571c1bd72a883e72c63724aaaafbc5

Aliases

arxiv: 1908.03729 · arxiv_version: 1908.03729v1 · doi: 10.48550/arxiv.1908.03729 · pith_short_12: BF4FAH3JXG3F · pith_short_16: BF4FAH3JXG3F4FKZ · pith_short_8: BF4FAH3J

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/BF4FAH3JXG3F4FKZ5442YT4O74 \
  | 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: 0978501f69b9b65e1559ef39ac4f8eff31571c1bd72a883e72c63724aaaafbc5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ba293c9bc3063847743dcf5d14359f367973168711635fdaa91b724880740b8e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2019-08-10T10:59:35Z",
    "title_canon_sha256": "7ff708ba1b69ff28220a7e02be113f3bd8cc980a0e638b26e70203c178ad218a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.03729",
    "kind": "arxiv",
    "version": 1
  }
}