Pith Number

pith:EK7ICWUB

pith:2009:EK7ICWUB3AZPC746W3ZMSFIN44

not attested not anchored not stored refs pending

Algebraic Geometry of Topological Spaces I

Andreas Thom, Guillermo Corti\~nas

arxiv:0912.3635 v3 · 2009-12-18 · math.RA · math.FA · math.GN · math.KT

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EK7ICWUB3AZPC746W3ZMSFIN44}

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	2026-05-18T04:25:28.561648Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

22be815a81d832f17f9eb6f2c9150de731057bcce54bd660f7af17772b617319

Aliases

arxiv: 0912.3635 · arxiv_version: 0912.3635v3 · doi: 10.48550/arxiv.0912.3635 · pith_short_12: EK7ICWUB3AZP · pith_short_16: EK7ICWUB3AZPC746 · pith_short_8: EK7ICWUB

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/EK7ICWUB3AZPC746W3ZMSFIN44 \
  | 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: 22be815a81d832f17f9eb6f2c9150de731057bcce54bd660f7af17772b617319

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7b4c80c36919c52bf3dd9c0858e8fa1b0207cfc6e35362e82a9b82a2203a72f7",
    "cross_cats_sorted": [
      "math.FA",
      "math.GN",
      "math.KT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.RA",
    "submitted_at": "2009-12-18T10:40:50Z",
    "title_canon_sha256": "6ec13270a10ca009be271c332022037d9659a8b11b057606270ff1a9696c656e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.3635",
    "kind": "arxiv",
    "version": 3
  }
}