Pith Number

pith:4C7AQG7V

pith:2024:4C7AQG7V6X2CZQTSE66QFXU4FF

not attested not anchored not stored refs pending

$C^\infty$ regularity in semilinear free boundary problems

Daniel Restrepo, Xavier Ros-Oton

arxiv:2407.20426 v1 · 2024-07-29 · 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{4C7AQG7V6X2CZQTSE66QFXU4FF}

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.

Cited by

1 paper in Pith

Tangential touch between free and fixed boundaries for the fully nonlinear Alt-Phillips problem

Receipt and verification

First computed	2026-07-05T08:49:57.702472Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e0be081bf5f5f42cc27227bd02de9c2954827d68122f6faa8e8173cd18365841

Aliases

arxiv: 2407.20426 · arxiv_version: 2407.20426v1 · doi: 10.48550/arxiv.2407.20426 · pith_short_12: 4C7AQG7V6X2C · pith_short_16: 4C7AQG7V6X2CZQTS · pith_short_8: 4C7AQG7V

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/4C7AQG7V6X2CZQTSE66QFXU4FF \
  | 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: e0be081bf5f5f42cc27227bd02de9c2954827d68122f6faa8e8173cd18365841

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "67bf96b9cb8f23210b25e7277687ba5db1b9dbe979015a697a8f9780e5c19cc3",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2024-07-29T21:35:21Z",
    "title_canon_sha256": "a7043928ab8d55234f41e22cd055b16bcb09cf3ad83c9a0ec0cbef01b9f2db73"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2407.20426",
    "kind": "arxiv",
    "version": 1
  }
}