Pith Number

pith:WJWALQKZ

pith:2021:WJWALQKZK4TFOUBUHPVLOH52TR

not attested not anchored not stored refs pending

An inverse boundary value problem for the inhomogeneous porous medium equation

C\u{a}t\u{a}lin I. C\^arstea, Gen Nakamura, Tuhin Ghosh

arxiv:2105.01368 v2 · 2021-05-04 · 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{WJWALQKZK4TFOUBUHPVLOH52TR}

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	2026-07-05T06:50:09.148874Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b26c05c15957265750343beab71fba9c5d96b0846db9494adbe9955ef605c4ef

Aliases

arxiv: 2105.01368 · arxiv_version: 2105.01368v2 · doi: 10.48550/arxiv.2105.01368 · pith_short_12: WJWALQKZK4TF · pith_short_16: WJWALQKZK4TFOUBU · pith_short_8: WJWALQKZ

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/WJWALQKZK4TFOUBUHPVLOH52TR \
  | 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: b26c05c15957265750343beab71fba9c5d96b0846db9494adbe9955ef605c4ef

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9b39b8350a4b6915bcc0173139f56fdd1400bf746d555a3616d103afa039ba1c",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2021-05-04T08:46:41Z",
    "title_canon_sha256": "df316e2e342a64ef781a8da4a4ab4a1cf9656cc3084c0585840cc3dd696bf0b8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2105.01368",
    "kind": "arxiv",
    "version": 2
  }
}