Pith Number

pith:GK7PS42V

pith:2010:GK7PS42VLFB7ZY4SUAQW2W43C5

not attested not anchored not stored refs pending

Irregular Time Dependent Obstacles

Mikko Parviainen, Peter Lindqvist

arxiv:1011.1901 v1 · 2010-11-08 · 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{GK7PS42VLFB7ZY4SUAQW2W43C5}

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	2026-05-18T04:36:49.651170Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

32bef973555943fce392a0216d5b9b17799ded35ae7d42009cebb50b4f2f1b37

Aliases

arxiv: 1011.1901 · arxiv_version: 1011.1901v1 · doi: 10.48550/arxiv.1011.1901 · pith_short_12: GK7PS42VLFB7 · pith_short_16: GK7PS42VLFB7ZY4S · pith_short_8: GK7PS42V

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/GK7PS42VLFB7ZY4SUAQW2W43C5 \
  | 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: 32bef973555943fce392a0216d5b9b17799ded35ae7d42009cebb50b4f2f1b37

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a09fd2f20fe888231db320c838cebee5027bec600c3c73a961edbc4f60ce9c37",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2010-11-08T20:53:52Z",
    "title_canon_sha256": "9662ed3a72ecfcfbf1db3785351a46a5ebdbb6e9b06494e415abab1fc2e15d4c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1011.1901",
    "kind": "arxiv",
    "version": 1
  }
}