Pith Number

pith:I6C2Z6TJ

pith:2015:I6C2Z6TJ5LAFW6EJ4AAPHLNARH

not attested not anchored not stored refs pending

Well-posedness of a fractional porous medium equation on an evolving surface

Amal Alphonse, Charles M. Elliott

arxiv:1509.01447 v2 · 2015-09-04 · 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{I6C2Z6TJ5LAFW6EJ4AAPHLNARH}

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	2026-05-18T01:22:14.267463Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4785acfa69eac05b7889e000f3ada089e4f73277207c38cabe7faa82af1e341c

Aliases

arxiv: 1509.01447 · arxiv_version: 1509.01447v2 · doi: 10.48550/arxiv.1509.01447 · pith_short_12: I6C2Z6TJ5LAF · pith_short_16: I6C2Z6TJ5LAFW6EJ · pith_short_8: I6C2Z6TJ

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/I6C2Z6TJ5LAFW6EJ4AAPHLNARH \
  | 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: 4785acfa69eac05b7889e000f3ada089e4f73277207c38cabe7faa82af1e341c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8f14394b4dae603e27c73baa46fc9ca21369047c824249c9f2fcda233dedbaa5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2015-09-04T13:49:02Z",
    "title_canon_sha256": "8c2581e477f6a9c6514e400840181f1b8b3416373c797efff545f26ea5634ab7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.01447",
    "kind": "arxiv",
    "version": 2
  }
}