Pith Number

pith:P533CAZJ

pith:2014:P533CAZJS47DWTCAVSHAMRNOER

not attested not anchored not stored refs pending

Flat Fronts and Stability for the Porous Medium Equation

Clemens Kienzler

arxiv:1403.5811 v2 · 2014-03-23 · 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{P533CAZJS47DWTCAVSHAMRNOER}

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	2026-05-18T02:25:56.237715Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7f77b10329973e3b4c40ac8e0645ae246c618806c5c46595daabb3c3a79bb408

Aliases

arxiv: 1403.5811 · arxiv_version: 1403.5811v2 · doi: 10.48550/arxiv.1403.5811 · pith_short_12: P533CAZJS47D · pith_short_16: P533CAZJS47DWTCA · pith_short_8: P533CAZJ

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/P533CAZJS47DWTCAVSHAMRNOER \
  | 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: 7f77b10329973e3b4c40ac8e0645ae246c618806c5c46595daabb3c3a79bb408

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "57c9de31fedea26f51495676e5e9d13c8d083301584950e540df630d0dad30c6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2014-03-23T22:44:29Z",
    "title_canon_sha256": "7caff0cc5d6c90cfe160d122ebe5bf2cd730e6d2c347009a703c8e893975eb00"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1403.5811",
    "kind": "arxiv",
    "version": 2
  }
}