Pith Number

pith:LNBXW7VY

pith:2017:LNBXW7VYWDA3JFWLDRTOJHEUDK

not attested not anchored not stored refs pending

Optimal extinction rates for the fast diffusion equation with strong absorption

Philippe Lauren\c{c}ot (IMT), Razvan Iagar (ICMAT)

arxiv:1711.07237 v1 · 2017-11-20 · 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{LNBXW7VYWDA3JFWLDRTOJHEUDK}

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	2026-05-18T00:14:46.952044Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5b437b7eb8b0c1b496cb1c66e49c941ab4fe46566d702fe87df787f8aaf8a172

Aliases

arxiv: 1711.07237 · arxiv_version: 1711.07237v1 · doi: 10.48550/arxiv.1711.07237 · pith_short_12: LNBXW7VYWDA3 · pith_short_16: LNBXW7VYWDA3JFWL · pith_short_8: LNBXW7VY

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/LNBXW7VYWDA3JFWLDRTOJHEUDK \
  | 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: 5b437b7eb8b0c1b496cb1c66e49c941ab4fe46566d702fe87df787f8aaf8a172

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f86a78e197d6bbe1928952a65f425c773b1d8c20fda45e3b074590441d77e3fa",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2017-11-20T10:07:03Z",
    "title_canon_sha256": "b2755de4a55b1d03b1335bbaacb79f85f0cf39dcf26b38157c1c79091f7bfb00"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1711.07237",
    "kind": "arxiv",
    "version": 1
  }
}