Pith Number

pith:2LQ2QK6Q

pith:2011:2LQ2QK6Q3UCMH2AXXLLZBSH5II

not attested not anchored not stored refs pending

A stationary free boundary problem modeling electrostatic MEMS

Christoph Walker (IFAM), Philippe Laurencot (IMT)

arxiv:1111.1156 v1 · 2011-11-04 · 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{2LQ2QK6Q3UCMH2AXXLLZBSH5II}

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	2026-05-18T03:35:28.328199Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d2e1a82bd0dd04c3e817bad790c8fd423a7309e4b73de7f7be40a351a4f42cea

Aliases

arxiv: 1111.1156 · arxiv_version: 1111.1156v1 · doi: 10.48550/arxiv.1111.1156 · pith_short_12: 2LQ2QK6Q3UCM · pith_short_16: 2LQ2QK6Q3UCMH2AX · pith_short_8: 2LQ2QK6Q

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/2LQ2QK6Q3UCMH2AXXLLZBSH5II \
  | 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: d2e1a82bd0dd04c3e817bad790c8fd423a7309e4b73de7f7be40a351a4f42cea

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "43d52b034c2156ec1abe6c728c7ff8b69b9722132717690a72535e712b29660f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2011-11-04T15:30:00Z",
    "title_canon_sha256": "7aa70278eaa929b4940b1cf32a1b987b0e7364756140678c122629fac895aaf5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.1156",
    "kind": "arxiv",
    "version": 1
  }
}