Pith Number

pith:MFRIXBJN

pith:2017:MFRIXBJNQMZZCKO6RP2ZMQOZ4I

not attested not anchored not stored refs pending

Almost complex structures on connected sums of complex projective spaces

Oliver Goertsches, Panagiotis Konstantis

arxiv:1710.05316 v4 · 2017-10-15 · math.AT · math.DG · 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{MFRIXBJNQMZZCKO6RP2ZMQOZ4I}

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	2026-05-17T23:49:06.144733Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

61628b852d83339129de8bf59641d9e20c2ea04d9e73b77b85079fc7fa79eb5f

Aliases

arxiv: 1710.05316 · arxiv_version: 1710.05316v4 · doi: 10.48550/arxiv.1710.05316 · pith_short_12: MFRIXBJNQMZZ · pith_short_16: MFRIXBJNQMZZCKO6 · pith_short_8: MFRIXBJN

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/MFRIXBJNQMZZCKO6RP2ZMQOZ4I \
  | 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: 61628b852d83339129de8bf59641d9e20c2ea04d9e73b77b85079fc7fa79eb5f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bdedcc03e3baf83fdd751702940080002915f1193343a2663120834c06c2ae30",
    "cross_cats_sorted": [
      "math.DG",
      "math.KT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2017-10-15T11:26:06Z",
    "title_canon_sha256": "8e7528b9f75e702dd711459a0d70b2f928f2b7ccf8433d334764660a2fb81e49"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1710.05316",
    "kind": "arxiv",
    "version": 4
  }
}