Pith Number

pith:EFDMEZNM

pith:2013:EFDMEZNMRSFSY3Z7LBZ44DSPXC

not attested not anchored not stored refs pending

Finite time singularity in a free boundary problem modeling MEMS

Christoph Walker (IFAM), Joachim Escher (IFAM), Philippe Laurencot (IMT)

arxiv:1305.7407 v1 · 2013-05-31 · 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{EFDMEZNMRSFSY3Z7LBZ44DSPXC}

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	2026-05-18T03:00:37.284431Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2146c265ac8c8b2c6f3f5873ce0e4fb89d23fb37afa5e53517dd820024ea9c7f

Aliases

arxiv: 1305.7407 · arxiv_version: 1305.7407v1 · doi: 10.48550/arxiv.1305.7407 · pith_short_12: EFDMEZNMRSFS · pith_short_16: EFDMEZNMRSFSY3Z7 · pith_short_8: EFDMEZNM

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/EFDMEZNMRSFSY3Z7LBZ44DSPXC \
  | 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: 2146c265ac8c8b2c6f3f5873ce0e4fb89d23fb37afa5e53517dd820024ea9c7f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9c113eeabb3da175f0da34408519a6b4f481202b15c9850693041ee689408f59",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2013-05-31T14:18:57Z",
    "title_canon_sha256": "886c911917470b09efb9af2bfc81cf8c2acb2c2cfa831d23d9c03ddd11f89deb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.7407",
    "kind": "arxiv",
    "version": 1
  }
}