Pith Number

pith:W5O2F7MA

pith:2015:W5O2F7MA6SNUFBYGAPJNS6YGD6

not attested not anchored not stored refs pending

Porosity of the Free Boundary in the Singular p-Parabolic Obstacle Problem

Abdeslem Lyaghfouri

arxiv:1508.07623 v1 · 2015-08-30 · 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{W5O2F7MA6SNUFBYGAPJNS6YGD6}

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	2026-05-18T01:34:31.832333Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b75da2fd80f49b42870603d2d97b061f844ad00564bc2edd6bae66e9b8c78171

Aliases

arxiv: 1508.07623 · arxiv_version: 1508.07623v1 · doi: 10.48550/arxiv.1508.07623 · pith_short_12: W5O2F7MA6SNU · pith_short_16: W5O2F7MA6SNUFBYG · pith_short_8: W5O2F7MA

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/W5O2F7MA6SNUFBYGAPJNS6YGD6 \
  | 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: b75da2fd80f49b42870603d2d97b061f844ad00564bc2edd6bae66e9b8c78171

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7140c1d7cbcd6d3e3f3337ef0387ee9788e7c2a68921f58cfb1110cbeeda4d87",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2015-08-30T19:26:12Z",
    "title_canon_sha256": "2aaaea010bdc54a139063c22e4a8696dda2a3ef99064e1ffca7adf8762e73fd8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.07623",
    "kind": "arxiv",
    "version": 1
  }
}